DateTimeUtils

java.lang.Object
- org.h2.util.DateTimeUtils

```
public class DateTimeUtils
extends java.lang.Object
```
This utility class contains time conversion functions.
Date value: a bit field with bits for the year, month, and day. Absolute day: the day number (0 means 1970-01-01).

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`EPOCH_DATE_VALUE` Date value for 1970-01-01.
`static long`	`MILLIS_PER_DAY` The number of milliseconds per day.
`static long`	`NANOS_PER_DAY` The number of nanoseconds per day.
`static long`	`SECONDS_PER_DAY` The number of seconds per day.
`static java.util.TimeZone`	`UTC` UTC time zone.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static long`	`absoluteDayFromDateValue(long dateValue)` Calculate the absolute day from an encoded date value.
`static long`	`absoluteDayFromYear(long year)` Calculate the absolute day for a January, 1 of the specified year.
`static void`	`appendDate(java.lang.StringBuilder buff, long dateValue)` Append a date to the string builder.
`static void`	`appendTime(java.lang.StringBuilder buff, long nanos)` Append a time to the string builder.
`static void`	`appendTimeZone(java.lang.StringBuilder buff, short tz)` Append a time zone to the string builder.
`static ValueDate`	`convertDate(java.sql.Date x, java.util.Calendar calendar)` Convert a java.util.Date using the specified calendar.
`static java.sql.Date`	`convertDate(Value value, java.util.Calendar calendar)` Convert the date to the specified time zone.
`static long`	`convertDateTimeValueToMillis(java.util.TimeZone tz, long dateValue, long ms)` Convert an encoded date-time value to millis, using the supplied timezone.
`static java.sql.Date`	`convertDateValueToDate(long dateValue)` Convert an encoded date value to a java.util.Date, using the default timezone.
`static java.sql.Timestamp`	`convertDateValueToTimestamp(long dateValue, long timeNanos)` Convert an encoded date value / time value to a timestamp, using the default timezone.
`static java.sql.Time`	`convertNanoToTime(long nanosSinceMidnight)` Convert a time value to a time, using the default timezone.
`static long`	`convertScale(long nanosOfDay, int scale)` Converts scale of nanoseconds.
`static ValueTime`	`convertTime(java.sql.Time x, java.util.Calendar calendar)` Convert the time using the specified calendar.
`static java.sql.Time`	`convertTime(Value value, java.util.Calendar calendar)` Convert the time to the specified time zone.
`static ValueTimestamp`	`convertTimestamp(java.sql.Timestamp x, java.util.Calendar calendar)` Convert the timestamp using the specified calendar.
`static java.sql.Timestamp`	`convertTimestamp(Value value, java.util.Calendar calendar)` Convert the timestamp to the specified time zone.
`static java.sql.Timestamp`	`convertTimestampTimeZoneToTimestamp(long dateValue, long timeNanos, short offsetMins)` Convert an encoded date value / time value to a timestamp using the specified time zone offset.
`static java.util.GregorianCalendar`	`createGregorianCalendar()` Creates a Gregorian calendar for the default timezone using the default locale.
`static java.util.GregorianCalendar`	`createGregorianCalendar(java.util.TimeZone tz)` Creates a Gregorian calendar for the given timezone using the default locale.
`static long[]`	`dateAndTimeFromValue(Value value)` Extracts date value and nanos of day from the specified value.
`static Value`	`dateTimeToValue(Value original, long dateValue, long timeNanos, boolean forceTimestamp)` Creates a new date-time value with the same type as original value.
`static long`	`dateValue(long year, int month, int day)` Get the date value from a given date.
`static long`	`dateValueFromAbsoluteDay(long absoluteDay)` Calculate the encoded date value from an absolute day.
`static long`	`dateValueFromDate(long ms)` Convert a UTC datetime in millis to an encoded date in the default timezone.
`static long`	`dateValueFromDenormalizedDate(long year, long month, int day)` Get the date value from a given denormalized date with possible out of range values of month and/or day.
`static int`	`dayFromDateValue(long x)` Get the day of month from a date value.
`static long`	`decrementDateValue(long dateValue)` Return the previous date value.
`static java.util.GregorianCalendar`	`getCalendar()` Get a calendar for the default timezone.
`static int`	`getDayOfWeek(long dateValue, int firstDayOfWeek)` Returns day of week.
`static int`	`getDayOfWeekFromAbsolute(long absoluteValue, int firstDayOfWeek)` Get the day of the week from the absolute day value.
`static int`	`getDayOfYear(long dateValue)` Returns number of day in year.
`static int`	`getDaysInMonth(int year, int month)` Returns number of days in month.
`static int`	`getIsoDayOfWeek(long dateValue)` Returns ISO day of week.
`static int`	`getIsoWeekOfYear(long dateValue)` Returns ISO number of week in year.
`static int`	`getIsoWeekYear(long dateValue)` Returns ISO week year.
`static long`	`getMillis(long dateValue, long timeNanos, short offsetMins)` Calculates the milliseconds since epoch for the specified date value, nanoseconds since midnight, and time zone offset.
`static long`	`getMillis(java.util.TimeZone tz, int year, int month, int day, int hour, int minute, int second, int millis)` Calculate the milliseconds since 1970-01-01 (UTC) for the given date and time (in the specified timezone).
`static int`	`getSundayDayOfWeek(long dateValue)` Returns day of week with Sunday as 1.
`static long`	`getTimeLocalWithoutDst(java.util.Date d)` Get the number of milliseconds since 1970-01-01 in the local timezone, but without daylight saving time into account.
`static long`	`getTimeUTCWithoutDst(long millis)` Convert the number of milliseconds since 1970-01-01 in the local timezone to UTC, but without daylight saving time into account.
`static int`	`getTimeZoneOffsetMillis(java.util.TimeZone tz, long dateValue, long timeNanos)` Calculates the time zone offset in minutes for the specified time zone, date value, and nanoseconds since midnight.
`static int`	`getWeekOfYear(long dateValue, int firstDayOfWeek, int minimalDaysInFirstWeek)` Returns number of week in year.
`static int`	`getWeekYear(long dateValue, int firstDayOfWeek, int minimalDaysInFirstWeek)` Returns week year.
`static long`	`incrementDateValue(long dateValue)` Return the next date value.
`static boolean`	`isValidDate(int year, int month, int day)` Verify if the specified date is valid.
`static int`	`monthFromDateValue(long x)` Get the month from a date value.
`static long`	`nanosFromDate(long ms)` Convert a time in milliseconds in UTC to the nanoseconds since midnight (in the default timezone).
`static ValueTimestamp`	`normalizeTimestamp(long absoluteDay, long nanos)` Calculate the normalized timestamp.
`static long`	`parseDateValue(java.lang.String s, int start, int end)` Parse a date string.
`static long`	`parseTimeNanos(java.lang.String s, int start, int end, boolean timeOfDay)` Parse a time string.
`static Value`	`parseTimestamp(java.lang.String s, Mode mode, boolean withTimeZone)` Parses timestamp value from the specified string.
`static long`	`prolepticGregorianAbsoluteDayFromDateValue(long dateValue)` Calculate the absolute day from an encoded date value in proleptic Gregorian calendar.
`static void`	`resetCalendar()` Reset the cached calendar for default timezone, for example after changing the default timezone.
`static ValueTimestampTimeZone`	`timestampTimeZoneFromLocalDateValueAndNanos(long dateValue, long timeNanos)` Converts local date value and nanoseconds to timestamp with time zone.
`static java.lang.String`	`timestampTimeZoneToString(long dateValue, long timeNanos, short timeZoneOffsetMins)` Formats timestamp with time zone as string.
`static java.lang.String`	`timeZoneNameFromOffsetMins(int offsetMins)` Generates time zone name for the specified offset in minutes.
`static int`	`yearFromDateValue(long x)` Get the year from a date value.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - MILLIS_PER_DAY
```
public static final long MILLIS_PER_DAY
```
    The number of milliseconds per day.
    
    See Also:
    
    Constant Field Values
  - SECONDS_PER_DAY
```
public static final long SECONDS_PER_DAY
```
    The number of seconds per day.
    
    See Also:
    
    Constant Field Values
  - UTC
```
public static final java.util.TimeZone UTC
```
    UTC time zone.
  - NANOS_PER_DAY
```
public static final long NANOS_PER_DAY
```
    The number of nanoseconds per day.
    
    See Also:
    
    Constant Field Values
  - EPOCH_DATE_VALUE
```
public static final int EPOCH_DATE_VALUE
```
    Date value for 1970-01-01.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - resetCalendar
```
public static void resetCalendar()
```
    Reset the cached calendar for default timezone, for example after changing the default timezone.
  - getCalendar
```
public static java.util.GregorianCalendar getCalendar()
```
    Get a calendar for the default timezone.
    
    Returns:
    
    a calendar instance. A cached instance is returned where possible
  - createGregorianCalendar
```
public static java.util.GregorianCalendar createGregorianCalendar()
```
    Creates a Gregorian calendar for the default timezone using the default locale. Dates in H2 are represented in a Gregorian calendar. So this method should be used instead of Calendar.getInstance() to ensure that the Gregorian calendar is used for all date processing instead of a default locale calendar that can be non-Gregorian in some locales.
    
    Returns:
    
    a new calendar instance.
  - createGregorianCalendar
```
public static java.util.GregorianCalendar createGregorianCalendar(java.util.TimeZone tz)
```
    Creates a Gregorian calendar for the given timezone using the default locale. Dates in H2 are represented in a Gregorian calendar. So this method should be used instead of Calendar.getInstance() to ensure that the Gregorian calendar is used for all date processing instead of a default locale calendar that can be non-Gregorian in some locales.
    
    Parameters:
    
    tz - timezone for the calendar, is never null
    
    Returns:
    
    a new calendar instance.
  - convertDate
```
public static java.sql.Date convertDate(Value value,
                                        java.util.Calendar calendar)
```
    Convert the date to the specified time zone.
    
    Parameters:
    
    value - the date (might be ValueNull)
    
    calendar - the calendar
    
    Returns:
    
    the date using the correct time zone
  - convertTime
```
public static java.sql.Time convertTime(Value value,
                                        java.util.Calendar calendar)
```
    Convert the time to the specified time zone.
    
    Parameters:
    
    value - the time (might be ValueNull)
    
    calendar - the calendar
    
    Returns:
    
    the time using the correct time zone
  - convertTimestamp
```
public static java.sql.Timestamp convertTimestamp(Value value,
                                                  java.util.Calendar calendar)
```
    Convert the timestamp to the specified time zone.
    
    Parameters:
    
    value - the timestamp (might be ValueNull)
    
    calendar - the calendar
    
    Returns:
    
    the timestamp using the correct time zone
  - convertDate
```
public static ValueDate convertDate(java.sql.Date x,
                                    java.util.Calendar calendar)
```
    Convert a java.util.Date using the specified calendar.
    
    Parameters:
    
    x - the date
    
    calendar - the calendar
    
    Returns:
    
    the date
  - convertTime
```
public static ValueTime convertTime(java.sql.Time x,
                                    java.util.Calendar calendar)
```
    Convert the time using the specified calendar.
    
    Parameters:
    
    x - the time
    
    calendar - the calendar
    
    Returns:
    
    the time
  - convertTimestamp
```
public static ValueTimestamp convertTimestamp(java.sql.Timestamp x,
                                              java.util.Calendar calendar)
```
    Convert the timestamp using the specified calendar.
    
    Parameters:
    
    x - the time
    
    calendar - the calendar
    
    Returns:
    
    the timestamp
  - parseDateValue
```
public static long parseDateValue(java.lang.String s,
                                  int start,
                                  int end)
```
    Parse a date string. The format is: [+|-]year-month-day
    
    Parameters:
    
    s - the string to parse
    
    start - the parse index start
    
    end - the parse index end
    
    Returns:
    
    the date value
    
    Throws:
    
    java.lang.IllegalArgumentException - if there is a problem
  - parseTimeNanos
```
public static long parseTimeNanos(java.lang.String s,
                                  int start,
                                  int end,
                                  boolean timeOfDay)
```
    Parse a time string. The format is: [-]hour:minute:second[.nanos] or alternatively [-]hour.minute.second[.nanos].
    
    Parameters:
    
    s - the string to parse
    
    start - the parse index start
    
    end - the parse index end
    
    timeOfDay - whether the result need to be within 0 (inclusive) and 1 day (exclusive)
    
    Returns:
    
    the time in nanoseconds
    
    Throws:
    
    java.lang.IllegalArgumentException - if there is a problem
  - parseTimestamp
```
public static Value parseTimestamp(java.lang.String s,
                                   Mode mode,
                                   boolean withTimeZone)
```
    Parses timestamp value from the specified string.
    
    Parameters:
    
    s - string to parse
    
    mode - database mode, or null
    
    withTimeZone - if true return ValueTimestampTimeZone instead of ValueTimestamp
    
    Returns:
    
    parsed timestamp
  - getTimeZoneOffsetMillis
```
public static int getTimeZoneOffsetMillis(java.util.TimeZone tz,
                                          long dateValue,
                                          long timeNanos)
```
    Calculates the time zone offset in minutes for the specified time zone, date value, and nanoseconds since midnight.
    
    Parameters:
    
    tz - time zone, or null for default
    
    dateValue - date value
    
    timeNanos - nanoseconds since midnight
    
    Returns:
    
    time zone offset in milliseconds
  - getMillis
```
public static long getMillis(long dateValue,
                             long timeNanos,
                             short offsetMins)
```
    Calculates the milliseconds since epoch for the specified date value, nanoseconds since midnight, and time zone offset.
    
    Parameters:
    
    dateValue - date value
    
    timeNanos - nanoseconds since midnight
    
    offsetMins - time zone offset in minutes
    
    Returns:
    
    milliseconds since epoch in UTC
  - getMillis
```
public static long getMillis(java.util.TimeZone tz,
                             int year,
                             int month,
                             int day,
                             int hour,
                             int minute,
                             int second,
                             int millis)
```
    Calculate the milliseconds since 1970-01-01 (UTC) for the given date and time (in the specified timezone).
    
    Parameters:
    
    tz - the timezone of the parameters, or null for the default timezone
    
    year - the absolute year (positive or negative)
    
    month - the month (1-12)
    
    day - the day (1-31)
    
    hour - the hour (0-23)
    
    minute - the minutes (0-59)
    
    second - the number of seconds (0-59)
    
    millis - the number of milliseconds
    
    Returns:
    
    the number of milliseconds (UTC)
  - dateAndTimeFromValue
```
public static long[] dateAndTimeFromValue(Value value)
```
    Extracts date value and nanos of day from the specified value.
    
    Parameters:
    
    value - value to extract fields from
    
    Returns:
    
    array with date value and nanos of day
  - dateTimeToValue
```
public static Value dateTimeToValue(Value original,
                                    long dateValue,
                                    long timeNanos,
                                    boolean forceTimestamp)
```
    Creates a new date-time value with the same type as original value. If original value is a ValueTimestampTimeZone, returned value will have the same time zone offset as original value.
    
    Parameters:
    
    original - original value
    
    dateValue - date value for the returned value
    
    timeNanos - nanos of day for the returned value
    
    forceTimestamp - if true return ValueTimestamp if original argument is ValueDate or ValueTime
    
    Returns:
    
    new value with specified date value and nanos of day
  - getTimeLocalWithoutDst
```
public static long getTimeLocalWithoutDst(java.util.Date d)
```
    Get the number of milliseconds since 1970-01-01 in the local timezone, but without daylight saving time into account.
    
    Parameters:
    
    d - the date
    
    Returns:
    
    the milliseconds
  - getTimeUTCWithoutDst
```
public static long getTimeUTCWithoutDst(long millis)
```
    Convert the number of milliseconds since 1970-01-01 in the local timezone to UTC, but without daylight saving time into account.
    
    Parameters:
    
    millis - the number of milliseconds in the local timezone
    
    Returns:
    
    the number of milliseconds in UTC
  - getDayOfWeek
```
public static int getDayOfWeek(long dateValue,
                               int firstDayOfWeek)
```
    Returns day of week.
    
    Parameters:
    
    dateValue - the date value
    
    firstDayOfWeek - first day of week, Monday as 1, Sunday as 7 or 0
    
    Returns:
    
    day of week
    
    See Also:
    
    getIsoDayOfWeek(long)
  - getDayOfWeekFromAbsolute
```
public static int getDayOfWeekFromAbsolute(long absoluteValue,
                                           int firstDayOfWeek)
```
    Get the day of the week from the absolute day value.
    
    Parameters:
    
    absoluteValue - the absolute day
    
    firstDayOfWeek - the first day of the week
    
    Returns:
    
    the day of week
  - getDayOfYear
```
public static int getDayOfYear(long dateValue)
```
    Returns number of day in year.
    
    Parameters:
    
    dateValue - the date value
    
    Returns:
    
    number of day in year
  - getIsoDayOfWeek
```
public static int getIsoDayOfWeek(long dateValue)
```
    Returns ISO day of week.
    
    Parameters:
    
    dateValue - the date value
    
    Returns:
    
    ISO day of week, Monday as 1 to Sunday as 7
    
    See Also:
    
    getSundayDayOfWeek(long)
  - getIsoWeekOfYear
```
public static int getIsoWeekOfYear(long dateValue)
```
    Returns ISO number of week in year.
    
    Parameters:
    
    dateValue - the date value
    
    Returns:
    
    number of week in year
    
    See Also:
    
    getIsoWeekYear(long), getWeekOfYear(long, int, int)
  - getIsoWeekYear
```
public static int getIsoWeekYear(long dateValue)
```
    Returns ISO week year.
    
    Parameters:
    
    dateValue - the date value
    
    Returns:
    
    ISO week year
    
    See Also:
    
    getIsoWeekOfYear(long), getWeekYear(long, int, int)
  - getSundayDayOfWeek
```
public static int getSundayDayOfWeek(long dateValue)
```
    Returns day of week with Sunday as 1.
    
    Parameters:
    
    dateValue - the date value
    
    Returns:
    
    day of week, Sunday as 1 to Monday as 7
    
    See Also:
    
    getIsoDayOfWeek(long)
  - getWeekOfYear
```
public static int getWeekOfYear(long dateValue,
                                int firstDayOfWeek,
                                int minimalDaysInFirstWeek)
```
    Returns number of week in year.
    
    Parameters:
    
    dateValue - the date value
    
    firstDayOfWeek - first day of week, Monday as 1, Sunday as 7 or 0
    
    minimalDaysInFirstWeek - minimal days in first week of year
    
    Returns:
    
    number of week in year
    
    See Also:
    
    getIsoWeekOfYear(long)
  - getWeekYear
```
public static int getWeekYear(long dateValue,
                              int firstDayOfWeek,
                              int minimalDaysInFirstWeek)
```
    Returns week year.
    
    Parameters:
    
    dateValue - the date value
    
    firstDayOfWeek - first day of week, Monday as 1, Sunday as 7 or 0
    
    minimalDaysInFirstWeek - minimal days in first week of year
    
    Returns:
    
    week year
    
    See Also:
    
    getIsoWeekYear(long)
  - getDaysInMonth
```
public static int getDaysInMonth(int year,
                                 int month)
```
    Returns number of days in month.
    
    Parameters:
    
    year - the year
    
    month - the month
    
    Returns:
    
    number of days in the specified month
  - isValidDate
```
public static boolean isValidDate(int year,
                                  int month,
                                  int day)
```
    Verify if the specified date is valid.
    
    Parameters:
    
    year - the year
    
    month - the month (January is 1)
    
    day - the day (1 is the first of the month)
    
    Returns:
    
    true if it is valid
  - convertDateValueToDate
```
public static java.sql.Date convertDateValueToDate(long dateValue)
```
    Convert an encoded date value to a java.util.Date, using the default timezone.
    
    Parameters:
    
    dateValue - the date value
    
    Returns:
    
    the date
  - convertDateTimeValueToMillis
```
public static long convertDateTimeValueToMillis(java.util.TimeZone tz,
                                                long dateValue,
                                                long ms)
```
    Convert an encoded date-time value to millis, using the supplied timezone.
    
    Parameters:
    
    tz - the timezone
    
    dateValue - the date value
    
    ms - milliseconds of day
    
    Returns:
    
    the date
  - convertDateValueToTimestamp
```
public static java.sql.Timestamp convertDateValueToTimestamp(long dateValue,
                                                             long timeNanos)
```
    Convert an encoded date value / time value to a timestamp, using the default timezone.
    
    Parameters:
    
    dateValue - the date value
    
    timeNanos - the nanoseconds since midnight
    
    Returns:
    
    the timestamp
  - convertTimestampTimeZoneToTimestamp
```
public static java.sql.Timestamp convertTimestampTimeZoneToTimestamp(long dateValue,
                                                                     long timeNanos,
                                                                     short offsetMins)
```
    Convert an encoded date value / time value to a timestamp using the specified time zone offset.
    
    Parameters:
    
    dateValue - the date value
    
    timeNanos - the nanoseconds since midnight
    
    offsetMins - time zone offset in minutes
    
    Returns:
    
    the timestamp
  - convertNanoToTime
```
public static java.sql.Time convertNanoToTime(long nanosSinceMidnight)
```
    Convert a time value to a time, using the default timezone.
    
    Parameters:
    
    nanosSinceMidnight - the nanoseconds since midnight
    
    Returns:
    
    the time
  - yearFromDateValue
```
public static int yearFromDateValue(long x)
```
    Get the year from a date value.
    
    Parameters:
    
    x - the date value
    
    Returns:
    
    the year
  - monthFromDateValue
```
public static int monthFromDateValue(long x)
```
    Get the month from a date value.
    
    Parameters:
    
    x - the date value
    
    Returns:
    
    the month (1..12)
  - dayFromDateValue
```
public static int dayFromDateValue(long x)
```
    Get the day of month from a date value.
    
    Parameters:
    
    x - the date value
    
    Returns:
    
    the day (1..31)
  - dateValue
```
public static long dateValue(long year,
                             int month,
                             int day)
```
    Get the date value from a given date.
    
    Parameters:
    
    year - the year
    
    month - the month (1..12)
    
    day - the day (1..31)
    
    Returns:
    
    the date value
  - dateValueFromDenormalizedDate
```
public static long dateValueFromDenormalizedDate(long year,
                                                 long month,
                                                 int day)
```
    Get the date value from a given denormalized date with possible out of range values of month and/or day. Used after addition or subtraction month or years to (from) it to get a valid date.
    
    Parameters:
    
    year - the year
    
    month - the month, if out of range month and year will be normalized
    
    day - the day of the month, if out of range it will be saturated
    
    Returns:
    
    the date value
  - dateValueFromDate
```
public static long dateValueFromDate(long ms)
```
    Convert a UTC datetime in millis to an encoded date in the default timezone.
    
    Parameters:
    
    ms - the milliseconds
    
    Returns:
    
    the date value
  - nanosFromDate
```
public static long nanosFromDate(long ms)
```
    Convert a time in milliseconds in UTC to the nanoseconds since midnight (in the default timezone).
    
    Parameters:
    
    ms - the milliseconds
    
    Returns:
    
    the nanoseconds
  - normalizeTimestamp
```
public static ValueTimestamp normalizeTimestamp(long absoluteDay,
                                                long nanos)
```
    Calculate the normalized timestamp.
    
    Parameters:
    
    absoluteDay - the absolute day
    
    nanos - the nanoseconds (may be negative or larger than one day)
    
    Returns:
    
    the timestamp
  - timestampTimeZoneFromLocalDateValueAndNanos
```
public static ValueTimestampTimeZone timestampTimeZoneFromLocalDateValueAndNanos(long dateValue,
                                                                                 long timeNanos)
```
    Converts local date value and nanoseconds to timestamp with time zone.
    
    Parameters:
    
    dateValue - date value
    
    timeNanos - nanoseconds since midnight
    
    Returns:
    
    timestamp with time zone
  - absoluteDayFromYear
```
public static long absoluteDayFromYear(long year)
```
    Calculate the absolute day for a January, 1 of the specified year.
    
    Parameters:
    
    year - the year
    
    Returns:
    
    the absolute day
  - absoluteDayFromDateValue
```
public static long absoluteDayFromDateValue(long dateValue)
```
    Calculate the absolute day from an encoded date value.
    
    Parameters:
    
    dateValue - the date value
    
    Returns:
    
    the absolute day
  - prolepticGregorianAbsoluteDayFromDateValue
```
public static long prolepticGregorianAbsoluteDayFromDateValue(long dateValue)
```
    Calculate the absolute day from an encoded date value in proleptic Gregorian calendar.
    
    Parameters:
    
    dateValue - the date value
    
    Returns:
    
    the absolute day in proleptic Gregorian calendar
  - dateValueFromAbsoluteDay
```
public static long dateValueFromAbsoluteDay(long absoluteDay)
```
    Calculate the encoded date value from an absolute day.
    
    Parameters:
    
    absoluteDay - the absolute day
    
    Returns:
    
    the date value
  - incrementDateValue
```
public static long incrementDateValue(long dateValue)
```
    Return the next date value.
    
    Parameters:
    
    dateValue - the date value
    
    Returns:
    
    the next date value
  - decrementDateValue
```
public static long decrementDateValue(long dateValue)
```
    Return the previous date value.
    
    Parameters:
    
    dateValue - the date value
    
    Returns:
    
    the previous date value
  - appendDate
```
public static void appendDate(java.lang.StringBuilder buff,
                              long dateValue)
```
    Append a date to the string builder.
    
    Parameters:
    
    buff - the target string builder
    
    dateValue - the date value
  - appendTime
```
public static void appendTime(java.lang.StringBuilder buff,
                              long nanos)
```
    Append a time to the string builder.
    
    Parameters:
    
    buff - the target string builder
    
    nanos - the time in nanoseconds
  - appendTimeZone
```
public static void appendTimeZone(java.lang.StringBuilder buff,
                                  short tz)
```
    Append a time zone to the string builder.
    
    Parameters:
    
    buff - the target string builder
    
    tz - the time zone in minutes
  - timestampTimeZoneToString
```
public static java.lang.String timestampTimeZoneToString(long dateValue,
                                                         long timeNanos,
                                                         short timeZoneOffsetMins)
```
    Formats timestamp with time zone as string.
    
    Parameters:
    
    dateValue - the year-month-day bit field
    
    timeNanos - nanoseconds since midnight
    
    timeZoneOffsetMins - the time zone offset in minutes
    
    Returns:
    
    formatted string
  - timeZoneNameFromOffsetMins
```
public static java.lang.String timeZoneNameFromOffsetMins(int offsetMins)
```
    Generates time zone name for the specified offset in minutes.
    
    Parameters:
    
    offsetMins - offset in minutes
    
    Returns:
    
    time zone name
  - convertScale
```
public static long convertScale(long nanosOfDay,
                                int scale)
```
    Converts scale of nanoseconds.
    
    Parameters:
    
    nanosOfDay - nanoseconds of day
    
    scale - fractional seconds precision
    
    Returns:
    
    scaled value

Class DateTimeUtils

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

MILLIS_PER_DAY

SECONDS_PER_DAY

UTC

NANOS_PER_DAY

EPOCH_DATE_VALUE

Method Detail

resetCalendar

getCalendar

createGregorianCalendar

createGregorianCalendar

convertDate

convertTime

convertTimestamp

convertDate

convertTime

convertTimestamp

parseDateValue

parseTimeNanos

parseTimestamp

getTimeZoneOffsetMillis

getMillis

getMillis

dateAndTimeFromValue

dateTimeToValue

getTimeLocalWithoutDst

getTimeUTCWithoutDst

getDayOfWeek

getDayOfWeekFromAbsolute

getDayOfYear

getIsoDayOfWeek

getIsoWeekOfYear

getIsoWeekYear

getSundayDayOfWeek

getWeekOfYear

getWeekYear

getDaysInMonth

isValidDate

convertDateValueToDate

convertDateTimeValueToMillis

convertDateValueToTimestamp

convertTimestampTimeZoneToTimestamp

convertNanoToTime

yearFromDateValue

monthFromDateValue

dayFromDateValue

dateValue

dateValueFromDenormalizedDate

dateValueFromDate

nanosFromDate

normalizeTimestamp

timestampTimeZoneFromLocalDateValueAndNanos

absoluteDayFromYear

absoluteDayFromDateValue

prolepticGregorianAbsoluteDayFromDateValue

dateValueFromAbsoluteDay

incrementDateValue

decrementDateValue

appendDate

appendTime

appendTimeZone

timestampTimeZoneToString

timeZoneNameFromOffsetMins

convertScale