StartOfTheDay

Calculate the start of the day as a TDateTime value, given a moment in the day.

Declaration

Source position: dateutil.inc line 165

  function StartOfTheDay(const AValue: TDateTime) : TDateTime;

Description

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.

See also

Name	Description
EndOfADay	Calculates a TDateTime value representing the end of a specified day
EndOfAMonth	Calculate a TDateTime value representing the last day of the indicated month
EndOfAWeek	Return the last moment of day of the week, given a year and a week in the year.
EndOfAYear	Calculate a TDateTime value representing the last day of a year
EndOftheDay	Calculate a TDateTime value that represents the end of a given day.
EndOfTheMonth	Calculate a TDateTime value representing the last day of the month, given a day in that month.
EndOfTheWeek	Calculate a TDateTime value which represents the end of a week, given a date in that week.
EndOfTheYear	Calculate a TDateTime value representing the last day of a year, given a date in that year.
StartOfADay	Return the start of a day as a TDateTime value, given a day indication
StartOfAMonth	Return first date of month, given a year/month pair.
StartOfAWeek	Return a day of the week, given a year, week and day in the week.
StartOfTheMonth	Calculate the first day of the month, given a date in that month.
StartOfTheWeek	Return the first day of the week, given a date.

Example

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.