How to get timezone offset as ±hh:mm?
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.
Here is extension for getting timezone offset Difference and as ±hh:mm (Swift 4 | Swift 5 Code)
extension TimeZone {
func offsetFromUTC() -> String
{
let localTimeZoneFormatter = DateFormatter()
localTimeZoneFormatter.timeZone = self
localTimeZoneFormatter.dateFormat = "Z"
return localTimeZoneFormatter.string(from: Date())
}
func offsetInHours() -> String
{
let hours = secondsFromGMT()/3600
let minutes = abs(secondsFromGMT()/60) % 60
let tz_hr = String(format: "%+.2d:%.2d", hours, minutes) // "+hh:mm"
return tz_hr
}
}
Use like this
print(TimeZone.current.offsetFromUTC()) // output is +0530
print(TimeZone.current.offsetInHours()) // output is "+05:30"