From Clomosy Docs
function FormatDateTime(const Format: string; DateTime: TclDateTime):string;
The FormatDateTime function provides rich formatting of a TclDateTime value DateTime into a string. Formatting is defined by the Format string. The Format string can comprise a mix of ordinary characters (that are passed unchanged to the result string), and data formatting characters. This formatting is best explained by the example code.
The following (non-Asian) formatting character strings can be used in the Formatting string:
- y = Year last 2 digits
- yy = Year last 2 digits
- yyyy = Year as 4 digits
- m = Month number no-leading 0
- mm = Month number as 2 digits
- mmm = Month using ShortDayNames (Jan)
- mmmm = Month using LongDayNames (January)
- d = Day number no-leading 0
- dd = Day number as 2 digits
- ddd = Day using ShortDayNames (Sun)
- dddd = Day using LongDayNames (Sunday)
- ddddd = Day in ShortDateFormat
- dddddd = Day in LongDateFormat
- c = Use ShortDateFormat + LongTimeFormat
- h = Hour number no-leading 0
- hh = Hour number as 2 digits
- n = Minute number no-leading 0
- nn = Minute number as 2 digits
- s = Second number no-leading 0
- ss = Second number as 2 digits
- z = Milli-sec number no-leading 0s
- zzz = Milli-sec number as 3 digits
- t = Use ShortTimeFormat
- tt = Use LongTimeFormat
- am/pm = Use after h : gives 12 hours + am/pm
- a/p = Use after h : gives 12 hours + a/p
- ampm = As a/p but TimeAMString,TimePMString
- / = Substituted by DateSeparator value
- : = Substituted by TimeSeparator value
Example
var
myDate : TDateTime;
{
myDate = '20.02.2023 12:24:26';
ShowMessage('d.m.y = '+FormatDateTime('d.m.y', myDate));
ShowMessage('dd.mm.yy = '+FormatDateTime('dd.mm.yy', myDate));
// Use short names for the day, month, and add freeform text ('of')
ShowMessage('ddd d of mmm yyyy = '+FormatDateTime('ddd d of mmm yyyy', myDate));
// Use long names for the day and month
ShowMessage('dddd d of mmmm yyyy = '+FormatDateTime('dddd d of mmmm yyyy', myDate));
// Use the ShortDateFormat settings only
ShowMessage('ddddd = '+FormatDateTime('ddddd', myDate));
// Use the LongDateFormat settings only
ShowMessage('dddddd = '+FormatDateTime('dddddd', myDate));
ShowMessage('c = '+FormatDateTime('c', myDate));
}
Output:
d.m.y = 20.2.23
dd.mm.yy = 20.02.23
ddd d of mmm yyyy = Mon 20 of Feb 2023
dddd d of mmmm yyyy = Monday 20 of February 2023
ddddd = 20.02.2023
dddddd = 20 February 2023 Monday
c = 20.02.2023 12:24:26