How to get timezone offset as ±hh:mm?

Question

I can get the offset seconds from GMT with this: TimeZone.current.secondsFromGMT().

However, how do I get the format as ±hh:mm?

Answer 1

Some integer arithmetic to obtain the offset in hours and minutes:

let seconds = TimeZone.current.secondsFromGMT()  let hours = seconds/3600 let minutes = abs(seconds/60) % 60 

Formatted printing:

let tz = String(format: "%+.2d:%.2d", hours, minutes) print(tz) // "+01:00"  

%.2d prints an integer with (at least) two decimal digits (and leading zero if necessary). %+.2d is the same but with a leading + sign for non-negative numbers.