| [Overview][Constants][Procedures and functions][Index] |
Calculate the start of the day as a TDateTime value, given a moment in the day.
Source position: dateutil.inc line 165
function StartOfTheDay( |
const AValue: TDateTime |
):TDateTime; |
AValue |
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TDateTime from which to calculate start of the day. |
Start of the day (00:00) as TDateTime value
StartOfTheDay extracts the date part of AValue and returns a TDateTime value with the date/time indication of the start (0:0:0.000) of this day.
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Return the start of a day as a TDateTime value, given a day indication |
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Return the first day of the week, given a date. |
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Return a day of the week, given a year, week and day in the week. |
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Return first date of month, given a year/month pair. |
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Calculate the first day of the month, given a date in that month. |
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Calculate a TDateTime value which represents the end of a week, given a date in that week. |
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Return the last moment of day of the week, given a year and a week in the year. |
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Calculate a TDateTime value representing the last day of a year, given a date in that year. |
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Calculate a TDateTime value representing the last day of a year |
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Calculate a TDateTime value representing the last day of the month, given a day in that month. |
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Calculate a TDateTime value representing the last day of the indicated month |
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Calculate a TDateTime value that represents the end of a given day. |
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Calculates a TDateTime value representing the end of a specified day |
Program Example36; { This program demonstrates the StartOfTheDay function } Uses SysUtils,DateUtils; Const Fmt = '"Start of the day : "dd mmmm yyyy hh:nn:ss'; Begin Writeln(FormatDateTime(Fmt,StartOfTheDay(Today))); End.