Jam Date/Time Format Documentation
Current date and time formats annoy me in several ways, sooooo...
I made my own time and date format!

This page documents the formats along with their uses and variants!
Date Formats
name format variants examples
Short Date DD-Mon\±Year DD-Mon 01-Jan\2026
25-May
Long Date Weekday, DDth Month ±Year DDth Month ±Year
Weekday, DD Month ±Year
DD Month ±Year
Monday, 13th June 2026
10th September 2011
Monday, 01 January 2026
25 May 2019

key meaning notes
DD 2 digit day of the month Single digit days must have a leading zero, e.g. 01, 02, etc
Mon 2 digit month number Single digit month numbers must have a leading zero, e.g. 01, 02, etc
±Year Full signed year Negative = BC/BCE; No sign (positive) = AD/CE
AD/CE years must be ≥ 4 digits long, e.g. 0001, 2026, etc
The year 0 is invalid, as this is not an actual year - -1 (1 BC) skips to 1 (1 AD)
Weekday Full weekday name
Month Full month name
th Ordinal indicators st / nd / rd / th
Time Formats
name format variants examples
Time of Day hh:mm;ss UTC±TZM hh:mm UTC±TZM
hh:mm;ss
hh:mm
10:30;45 UTC+04:00
19:20 UTC+02:00
02:00;05
22:15
Time Elapsed (days) dd/hh:mm;ss.σσσ dd/hh:mm;ss
dd/hh:mm
01/00:10;30.755
02/10:20;05
12/20:00
Time Elapsed (hours) ↑/HH:mm;ss.σσσ ↑/HH:mm;ss
↑/hh:mm
↑/10:03;10.010
↑/37:30;10
↑/00:20
Time (Countdown) ↓/HH:mm;ss.σσσ ↓/HH:mm;ss
↓/HH:mm
↓/HH:mm;ss.σσσ
↓/23:59;59
↓/05:10

key meaning notes
dd ≥2 digit days elapsed ≥0 days passed since time=0
add another digit where required - add leading zeros so all uses have the same number of digits!
hh 2 digit hours 24 hour format!
single digit values get leading zeros
HH ≥2 digit hours elapsed ≥0 hours passed since time=0
add another digit where required - add leading zeros so all uses have the same number of digits!
mm 2 digit minutes ranges from 0 to 59
single digit values get leading zeros
ss 2 digit seconds ranges from 0 to 59
single digit values get leading zeros
σσσ 3 digit milliseconds ranges from 0 to 999
single and double digit values get leading zeros
UTC±TZM UTC offsets (Timezones)