Military utility tools / DTG and Zulu time
DTG and Zulu time
Indian Standard Time to Zulu and back, in proper date time group format.
Set the inputs, then work it out.
DTG--as entered
Zulu DTG--UTC
IST--clock time
Zulu--clock time
Zulu date--may differ
Zone letter--of entered zone
Day of year--Zulu
Julian day--astronomical
Why is J not used?
J means local time, wherever the reader happens to be. It is deliberately kept out of the offset sequence so that it can never be confused with a specific zone.
Does India observe daylight saving?
No. The offset is a constant five and a half hours, which is one of the few things about this that is simple.