How to separate hour and minute from date .
let StDate = "2021-04-03T10:15:00Z"
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZ"
let dateFormatterPrint = DateFormatter()
dateFormatterPrint.dateFormat = "HH:mm"
if let date1 = formatter.date(from: StDate) {
let tme = dateFormatterPrint.string(from: date1)
print(tme)
}
Out Put
15:45
How to get 10:15
This most likely happens because you reside in a GMT+5 time zone. Meanwhile, your date string is UTC.
Use this to override the time zone:
dateFormatterPrint.timeZone = TimeZone(abbreviation: "UTC")
Your dateFormattedPrint by default uses your local timezone. Add
dateFormatterPrint.timeZone = TimeZone(identifier: "GMT")
to make it use GMT.
Related
func getDateWithoutTimeForDisplay() -> String {
let formatter = DateFormatter()
// formatter.locale = Locale(identifier: "en_US")
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
formatter.timeZone = TimeZone(identifier: "UTC")
formatter.locale = Locale(identifier: "en_US_POSIX")
let myStringafd = formatter.date(from: self)
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
dateFormatter.timeZone = NSTimeZone.local
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
if let myStringafd = myStringafd {
let somedateString = dateFormatter.string(from: myStringafd)
return somedateString
}
return ""
}
this is my code to convert given UTC date to system date based on the local time zone.
The actual problem is, suppose the case "i have the time 1.00 AM on the date 25-08-2020, according to the Indian time zone, ( UTC time is 5.30 lesser than Indian time) the corresponding UTC date is 24-08-2020 due to the time difference with the Indian time". In this case i want to convert the UTC date(Because it is effecting the date to be display for the user) to the current system date.
My system date&time is 25-08-2020 1:00 AM (Indian time)
the corresponding UTC date is 24-08-2020. -5:30 hr
i need to convert the UTC date to the current local time
Try this out:
let currentDate = self.UTCToLocal(date: Date().description) //This will pass system date in UTC format to the function and function will return desired output in local timezone
func UTCToLocal(date: String) -> String {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ssz" //The date format should be exact as same as UTC date
dateFormatter.timeZone = TimeZone(abbreviation: "UTC")
let dt = dateFormatter.date(from: date)
dateFormatter.timeZone = NSTimeZone.local
dateFormatter.dateFormat = "dd-MM-yyyy HH:mm:ss" //The desired date format in which you may want to return the value
return dateFormatter.string(from: dt!)
}
or you can check this post - Returning nil when converting string to date in swift and this link for dateFormatters - https://nsdateformatter.com/
I get the current UTC timestamp using Timezone(abbreviation:"UTC") but can't get the UTC timestamp of some other timestamp.
/*Current local time (4:15 PM) ---> Current UTC (11:15 AM)
Some other time (11:15 PM) ---> UTC (6:15 PM)*/
static func getDateFormat(by date:Date, format:String) -> String {
let formatter = DateFormatter()
formatter.dateFormat = format
formatter.timeZone = TimeZone(abbreviation: "UTC")
formatter.locale = Locale.current
return formatter.string(from: date)
}
This always give the current UTC.
func convertToUTC(dateToConvert:String) -> String {
let formatter = DateFormatter()
formatter.dateFormat = "dd-MM-yyyy hh:mm a"
let convertedDate = formatter.date(from: dateToConvert)
formatter.timeZone = TimeZone(identifier: "UTC")
return formatter.string(from: convertedDate!)
}
Your question is not explained properly, though i got your question after reading it multiple times.
You want a function in which you provide a date and that function return you a new date in UTC format.
func convertDateToUTC(date: Date) -> Date {
let calendar = Calendar.current
let dateComponent = calendar.dateComponents([.timeZone], from: date)
//get difference of curent time zone from gmt
//subtract 0 as we want UTC from current time zone
let gmtDiff = 0-dateComponent.timeZone!.secondsFromGMT()
let dateStr = "11:15 PM"
let formatter = DateFormatter()
formatter.dateFormat = "h:mm a"
let date1 = formatter.date(from: dateStr)
let newDate = date1?.addingTimeInterval(TimeInterval(gmtDiff))
return newDate
}
You can format method as your convenience.
We need date components to get time zone difference of current to UTC, then we add that seconds to date and new date we get will be UTC date .
I'm trying to convert a UTC to device local time in Swift 4. I found many solutions on stackoverflow for that and I implemented them in my code. My code works fine but it doesn't return the right answer.
My code is:
func UTCToLocal() -> String {
let a = "2:36:27 PM"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "hh:mm:ss aa"
dateFormatter.timeZone = TimeZone(abbreviation: "UTC")
let dt = dateFormatter.date(from: a)
dateFormatter.timeZone = TimeZone.current
dateFormatter.defaultDate = Date()
dateFormatter.dateFormat = "hh:mm:ss aa"
return dateFormatter.string(from: dt!)
}
According to my local time, Lebanon, this method should return the value 5:36:27 PM. However, it is returning 4:36:27 PM.
Note: I checked my device's local time and it's set correctly
This is due to Daylight Saving Time in Lebanon. You can take the time offset into consideration by using the daylightSavingTimeOffset(for:) method on your time zone:
func UTCToLocal() -> String {
let a = "2:36:27 PM"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "hh:mm:ss aa"
dateFormatter.timeZone = TimeZone(abbreviation: "UTC")
let dt = dateFormatter.date(from: a)
dateFormatter.timeZone = TimeZone.current
let offset = dateFormatter.timeZone.daylightSavingTimeOffset(for: dt!)
dateFormatter.defaultDate = Date()
dateFormatter.dateFormat = "hh:mm:ss aa"
return dateFormatter.string(from: dt! + offset)
}
UTCToLocal()
Note that dt is "Jan 1, 2000 at 2:36 PM" since you haven't specified the .day, .month, and .year date components in a
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss"
dateFormatter.timeZone = TimeZone(abbreviation: "KST")
let nowstring = dateFormatter.string(from: Date())
let nowdate = dateFormatter.date(from: nowstring)
print(nowstring)
print(nowdate)
print this 2018-07-24T15:06:26
Optional(2018-07-24 06:06:26 +0000)
i want nowdate value 2018-07-24T15:06:26
but String to Date without timezone
I have to use to timeIntervalSince so nowdate is must have timezone
let today = NSDate()
print("\(today)")
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let nowDatestring = formatter.string(from: today)
formatter.timeZone = TimeZone(abbreviation: "KST")
let kstDate = formatter.date(from: nowDatestring)
print("\(kstDate!)")
formatter.timeZone = TimeZone(abbreviation: "PST")
let pstDate = formatter.date(from: nowDatestring)
print("\(pstDate!)")
formatter.timeZone = TimeZone(abbreviation: "IST")
let istDate = formatter.date(from: nowDatestring)
print("\(istDate!)")
Date is a specific point in time, which is independent of time zone. If you print a date value it will be always independent of any calendar or time zone. It will give same value for you(KST) and me(IST). You can specify your time zone when you format it using DateFormatter.
Can somebody recommend how to get a current time/date in a specific timezone ?
This is what I got so far:
let date = NSDate()
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm"
let str = dateFormatter.string(from: date as Date)
dateFormatter.timeZone = NSTimeZone(name: "UTC") as! TimeZone
print(str)
It gives me my current time, I'm not sure how to change timezone correctly so it would print time in a specified time-zone...