Subtract minutes from NSDate

Question

I want to subtract some minutes 15 min 10 min etc., And i am having date object with time now i want to subtract minutes.

score 75 · Answer 1 · edited Jul 27 '13 at 20:03

75

Use following:

// gives new date object with time 15 minutes earlier
NSDate *newDate = [oldDate dateByAddingTimeInterval:-60*15];

edited Jul 27 '13 at 20:03

Fahim Parkar

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answered Feb 14 '11 at 04:38

jamihash

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@Ishu Make sure you are not passing an unsigned integer.I did that mistake. – akc Sep 20 '14 at 09:35
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This is simpler but there are some edge cases it misses (leap seconds, for example). This applies any time you see something assuming there are 60 seconds in a minute, 60 minutes in an hour, or any other shortcut. Using the other `NSCalendar` answers to this question leverages an existing set of functionality that has already handled all of the edge cases for you. – Ben Packard Jun 24 '15 at 15:36

score 25 · Accepted Answer · edited May 23 '17 at 11:46

25

Check out my answer to this question: NSDate substract one month

Here's a sample, modified for your question:

NSDate *today = [[NSDate alloc] init];
NSLog(@"%@", today);
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *offsetComponents = [[NSDateComponents alloc] init];
[offsetComponents setMinute:-10]; // note that I'm setting it to -1
NSDate *endOfWorldWar3 = [gregorian dateByAddingComponents:offsetComponents toDate:today options:0];
NSLog(@"%@", endOfWorldWar3);

Hope this helps!

edited May 23 '17 at 11:46

Community

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answered Feb 14 '11 at 04:53

donkim

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NSGregorianCalendar is deprecated from iOS 8 onwards. Maybe we can update this answer. – TheJeff Feb 16 '17 at 22:34

score 11 · Answer 3 · answered May 10 '15 at 13:35

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Since iOS 8 there is the more convenient dateByAddingUnit:

//subtract 15 minutes
let calendar = NSCalendar.autoupdatingCurrentCalendar()
newDate = calendar.dateByAddingUnit(.CalendarUnitMinute, value: -15, toDate: originalDate, options: nil)

answered May 10 '15 at 13:35

Ben Packard

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score 9 · Answer 4 · edited Aug 17 '18 at 11:48

The current Swift answer is outdated as of Swift 2.x. Here's an updated version:

let originalDate = NSDate() // "Jun 8, 2016, 12:05 AM"
let calendar = NSCalendar.currentCalendar()
let newDate = calendar.dateByAddingUnit(.Minute, value: -15, toDate: originalDate, options: []) // "Jun 7, 2016, 11:50 PM"

The NSCalendarUnit OptionSetType value has changed to .Minute and you can no longer pass in nil for options. Instead, use an empty array.

Update for Swift 3 using the new Date and Calendar classes:

let originalDate = Date() // "Jun 13, 2016, 1:23 PM"
let calendar = Calendar.current
let newDate = calendar.date(byAdding: .minute, value: -5, to: originalDate, options: []) // "Jun 13, 2016, 1:18 PM"

Update the code above for Swift 4:

let newDate = calendar.date(byAdding: .minute, value: -5, to: originalDate) // "Jun 13, 2016, 1:18 PM"

Subtract minutes from NSDate

4 Answers4