Number of days in a week.
ISO day number for Monday
ISO day number for Tuesday
ISO day number for Wednesday
ISO day number for Thursday
ISO day number for Friday
ISO day number for Saturday
ISO day number for Sunday
Array with number of days in a year. The boolean index indicates whether it is a leap year or not.
Average number of days in a month, measured over a year. Used in .
Average number of days in a year, measured over 4 years. Used in .
Extract the date part of a DateTime indication.
Date part of AValue.
Datetime to extract date of
Return the number of days in the year in which a date occurs.
Number of days in the year in which AValue occurs.
Date in year of which to calculate the number of days.
Number of days in a particular year.
Number of days in year AYear.
Year to return the number of days from
Return the number of days in the month in which a date occurs.
Number of days in the month in which AValue occurs.
Date in month of which to calculate the number of days.
Number of days in a month of a certain year.
The number of days in month AMonth, in year AYear.
Year in which the month occurs.
Month of which the number of days should be returned.
Extract the day (of month) part of a DateTime value
DateTime to extract day of
Return the hour part of a DateTime value.
Hour part of AValue.
Value to extract hour of.
Calculate a DateTime value representing the last day of a year, given a date in that year.
DateTime value representing the end of the year in which AValue falls.
Date in the year of which the end should be calculated
Calculate a DateTime value representing the last day of a year
DateTime representing the last day of AYear.
Year to calculate last day from
Calculate a DateTime value representing the last day of the month, given a day in that month.
DateTime value representing the last day of the month in which AVAlue is a day.
Day in the month of which the last day should be returned.
Calculate a datetime value representing the last day of the indicated month
DateTime value indicating the last day of AMonth in year AYear.
Year in which month occurs
Month to calculate end of
Calculate a DateTime value which represents the end of a week, given a date in that week.
DateTime value representing the last day of the week in which AVAlue is a day.
Day in the week of which the last day should be calculated.
Day of the week
Calculate a datetime value which represents the end of a specified week.
DateTime value representing the end of the week specified by AYear, AWeekOfYear and DayOfWeek
Year
Week of the year
Calculate a datetime value that represents the end of a given day.
A datetime value representing the time 23:59:59.999 of the day AValue.
Day to calculate the end of
Month in the year
Day in the month
Calculates a DateTime value representing the end of a specified day
A datetime value representing the time 23:59:59.999 of the given day.
Year
Day of the year
Extracts the day of the week from a DateTime value
Day of the year from AValue.
DateTime to extract the day of the year from.
Calculate the number of hours passed since the start of the year.
Number of hours passed since the start of the year till AValue .
DateTime value for which to calculate the hour of the year
Extract the day (of month) part of a DateTime value
Calculate the number of hours passed since the start of the month.
Number of hours passed since the start of the month till AValue.
DateTime value for which to calculate the hour of the month.
Extracts the day of the week from a DateTime value
Day of the week from AValue.
DateTime to extract the day of the week from.
Calculate the number of hours passed since the start of the week.
Number of hours passed since the start of the week till AValue.
DateTime value for which to calculate the hour of the week.
Calculate the hour of a given DateTime value
Hour part of AValue.
DateTime to calculate the hour of.
Number of days between two DateTime values.
Number of days between ANow and AThen.
First date
Second date
Calculate the number of hours between two DateTime values.
Number of hours between ANow and AThen
First DateTime value
Second DateTime value
Difference in times between two moments.
Days between ANow and AThen.
First moment
Second moment
Elapsed hours between two datetime values.
Elapsed time, in hours, between ANow and AThen
First DateTime value
Second DateTime value
Number of years to add
Increase a DateTime value with a number of years.
DateTime representing AValue plus ANumberOfYears years.
DateTime to which years should be added.
Number of weeks to add
Increase a DateTime value with a number of weeks.
DateTime representing AValue plus ANumberOfWeeks weeks.
DateTime to which weeks should be added.
Number of days to add.
Increase a DateTime value with a number of days.
DateTime representing AValue plus ANumberOfDays days.
DateTime value to which days should be added.
Number of hours to add
Increase a DateTime value with a number of hours.
DateTime representing AValue plus ANumberOfHours hours.
DateTime to which hours should be added.
Number of minutes to add
Increase a DateTime value with a number of minutes.
DateTime representing AValue plus ANumberOfMinutes minutes.
DateTime to which minutes should be added.
Number of seconds to add
Increase a DateTime value with a number of seconds.
DateTime representing AValue plus ANumberOfSeconds seconds.
DateTime to which seconds should be added.
Number of milliseconds to add
Increase a DateTime value with a number of milliseconds.
DateTime representing AValue plus ANumberOfMilliSeconds milliseconds.
DateTime to which milliseconds should be added.
Encodes a DateTime value from all its parts
DateTime value representing the complete timestamp
Year
Month
Day of the month
Hour of the day
Minutes
Seconds
Milliseconds
Decode a datetime value in a date and time value
DateTime to decode
Returns the year part of AValue.
Returns the month part of AValue.
Returns the day part of AValue.
Returns the hour part of AValue.
Returns the minute part of AValue.
Returns the second part of AValue.
Returns the millisecond part of AValue.
Day of the week part
Encode a DateTime value from a
DateTime value representing AYear, AWeekOfYear and ADayOfWeek.
Year part
Week of the year part
Decode a DateTime value in a week of year and day of week.
DateTime to decode
Returns the year part of AValue.
Returns the week of year part of AValue.
Returns the day of week part of AValue.
Encodes a year and day of year to a DateTime value
DateTimevalue representing the date specified by AYear and ADayOfYear.
Year part.
Day of the year part
Decode a DateTime value in year and year of day.
DateTime to decode
Returns the year part of AValue
Returns the day-of-year part of AValue
Encodes a year, month, week of month and day of week to a DateTime value
DateTime value representing the date specified by AYear, AMonth, AWeekOfMonth and ADayOfWeek.
Year part
Month part
Week of the month part
Day of the week part
Decode a DateTime value in a month, week of month and day of week
DateTime to decode
Returns the year part of AValue.
Returns the month part of AValue.
Returns the week of month part of AValue.
Returns the day of week part of AValue.
Compare 2 dates, taking into account the time of day
A negative number if A is earlier than B, zero if they are equal, or positive if A is later than B.
First date-time to compare
First date-time to compare
Compare 2 dates, disregarding the time of day
A negative number if date A is before B, zero if they are equal, or positive if A is after B.
First date to compare
Second date to compare
Compares two times of the day, disregarding the date part.
A negative number if A is before B, zero if they are equal, or positive A is later than B.
First time to compare
Second time to compare
DateTime to decode
Returns the year part of AValue.
Returns the month part of AValue.
Returns which ADayofWeek of AValue.
Returns the day of week part of AValue.
Encodes a year, month, week, day of week specification to a DateTime value
DateTime value representing AYear , AMonthANthDayOfWeek .and ADayOfWeek.
Year
Month in the year
Week in the month
Day of the weel
Base date time to use when creating the string representing the date/time. Default 0
Raise an EConvertError about an invalid date-time specification.
Year
Month in the year
Day of the month
Hour of the day
Minute of the hour
Seconds in the minute
Milliseconds in second
Raise an EConvertError with an invalid Year, WeekOfyear and DayOfWeek specification
Raise an EConvertError exception when a day is not a valid day of a year.
Year
Invalid day of the year.
Raise an EConvertError exception when a Year,Month,WeekOfMonth,DayofWeek is invalid.
Year
Month of the year
Week of the month
Day of the week
Converts a TDateTime value to a Julian date representation
Julian representation of AValue.
DateTime value to convert to Julian representation
Converts a TDateTime value to a Julian date representation
Modified Julian representation of AValue.
DateTime value to convert to Modified Julian representation
Convert DateTime value to Unix epoch time
Unix epoch time corresponding to AValue
DateTime value to convert