Time and Date format from KDE 4.10, Kate Handbook

date {STRING format}

Inserts a date/time string as defined by the specified format, or the format yyyy-MM-dd hh:mm:ss if none is specified. The following translations are done when interpreting format:

dThe day as number without a leading zero (1-31).
ddThe day as number with a leading zero (01-31).
dddThe abbreviated localized day name (e.g. 'Mon'..'Sun').
ddddThe long localized day name (e.g. 'Monday'..'Sunday').
MThe month as number without a leading zero (1-12).
MMThe month as number with a leading zero (01-12).
MMMMThe long localized month name (e.g. 'January'..'December').
MMMThe abbreviated localized month name (e.g. 'Jan'..'Dec').
yyThe year as two digit number (00-99).
yyyyThe year as four digit number (1752-8000).
hThe hour without a leading zero (0..23 or 1..12 if AM/PM display).
hhThe hour with a leading zero (00..23 or 01..12 if AM/PM display).
mThe minute without a leading zero (0..59).
mmThe minute with a leading zero (00..59).
sThe second without a leading zero (0..59).
ssThe second with a leading zero (00..59).
zThe milliseconds without leading zeroes (0..999).
zzzThe milliseconds with leading zeroes (000..999).
APUse AM/PM display. AP will be replaced by either "AM" or "PM".
apUse am/pm display. ap will be replaced by either "am" or "pm".