World Time Format (WTF) is a way of expressing time using letters instead of numbers.
WTF time is the same no matter where you are in the world. It is not tied to your local time zone.
The day is divided into 26 hours, starting with hour A and ending with hour Z. These hours are then divided into 26 minutes. Finally, each minute is divided into 26 seconds.
The time is preceded by a colon. :B is the second hour of the day written in World Time Format. :BD is the fourth minute of the second hour.
World Time Format is very useful. It shows you when :TEA time is. It also tells you when it's time to :EAT and :ZZZ.
A date can be expressed as a sequence of letters preceding the time. ST:HFR is a WTF date and time (ST is the date, HFR is the time).
If you wanted to write only the date, remember to follow it with a colon. ST: and JHRPF: are dates without times.