Getting the last day of a month

Question

How can I get the last day of the current month as an NSDate?

duplicate? http://stackoverflow.com/questions/1731322/get-all-days-of-any-month-with-objective-c — littlegreen, May 05 '10 at 10:36
**This is now very easy:** https://stackoverflow.com/a/45150320/294884 — Fattie, Jul 17 '17 at 21:40

score 71 · Answer 1 · edited Jul 14 '13 at 19:08

71

NSDate *curDate = [NSDate date];
NSCalendar* calendar = [NSCalendar currentCalendar];
NSDateComponents* comps = [calendar components:NSYearCalendarUnit|NSMonthCalendarUnit|NSWeekCalendarUnit|NSWeekdayCalendarUnit fromDate:curDate]; // Get necessary date components

// set last of month
[comps setMonth:[comps month]+1];
[comps setDay:0];
NSDate *tDateMonth = [calendar dateFromComponents:comps];
NSLog(@"%@", tDateMonth);

should also work.

edited Jul 14 '13 at 19:08

VisioN

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answered Dec 19 '10 at 12:31

Jonas Schnelli

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4

But why day = 0 would give a previous month's last date? – Raj Pawan Gumdal Feb 26 '13 at 06:52
2

That's why the month + 1 is there, Raj – Rob van der Veer Jul 14 '13 at 19:48

score 44 · Answer 2 · answered Dec 22 '10 at 04:13

44

// Adapted from running code in my app

NSDate *curDate = [NSDate date];
NSCalendar *currentCalendar = [NSCalendar currentCalendar];
NSRange daysRange = 
[currentCalendar 
 rangeOfUnit:NSDayCalendarUnit 
 inUnit:NSMonthCalendarUnit 
 forDate:curDate];

// daysRange.length will contain the number of the last day
// of the month containing curDate

NSLog(@"%i", daysRange.length);

answered Dec 22 '10 at 04:13

StCredZero

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For those obsessed with one-liners :P `days = [NSCalendar.currentCalendar rangeOfUnit:NSDayCalendarUnit inUnit:NSMonthCalendarUnit forDate:myDate].length` – mojuba Aug 26 '16 at 12:48

score 10 · Answer 3 · edited Apr 15 '16 at 02:14

10

Put this in a category:

-(NSDate*)lastDayOfMonth
{
    NSInteger dayCount = [self numberOfDaysInMonthCount];

    NSDateComponents *comp = [[self calendar] components:
                              NSCalendarUnitYear |
                              NSCalendarUnitMonth |
                              NSCalendarUnitDay fromDate:self];

    [comp setDay:dayCount];

    return [[self calendar] dateFromComponents:comp];
}

-(NSInteger)numberOfDaysInMonthCount
{
    NSRange dayRange = [[self calendar] rangeOfUnit:NSCalendarUnitDay
                                             inUnit:NSCalendarUnitMonth
                                            forDate:self];

    return dayRange.length;
}

-(NSCalendar*)calendar
{
    NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];    
    [calendar setTimeZone:[NSTimeZone timeZoneWithName:TIMEZONE]];
    return calendar;
}

edited Apr 15 '16 at 02:14

Cai

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answered Oct 20 '13 at 12:21

I'm using something similar to this, thanks, but any reason why your are using NSGregorianCalendar instead of `[NSCalendar currentCalendar]`? – Christopher King Oct 13 '15 at 23:30
Current calendar may not be NSGregorian calendar, and at the time I wanted to be explicit for peace of mind. – Oct 14 '15 at 08:52
if you want the very last second of the last day of the month just add comp.hour = 24; comp.minute = 0; comp.second = 0; – lucianoenrico Jan 08 '16 at 10:56

SoftDesigner · Answer 4 · 2015-12-03T19:13:52.627

3

Swift version

extension NSDate {
    func lastDayOfMonth() -> NSDate {
        let calendar = NSCalendar.currentCalendar()
        let dayRange = calendar.rangeOfUnit(.Day, inUnit: .Month, forDate: self)
        let dayCount = dayRange.length
        let comp = calendar.components([.Year, .Month, .Day], fromDate: self)

        comp.day = dayCount

        return calendar.dateFromComponents(comp)!
    }
}

edited Dec 03 '15 at 19:13

answered Dec 03 '15 at 18:56

SoftDesigner

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score 0 · Answer 5 · answered Jan 08 '16 at 10:56

Version from iOS 7

just to get rid of the deprecations... with a minor addition to get the last second of the day.

    // current date
    NSDate *now = [NSDate new];

    // get last day of the current month
    NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
    [calendar setTimeZone:[NSTimeZone systemTimeZone]];

    NSRange dayRange = [ calendar rangeOfUnit:NSCalendarUnitDay
                                       inUnit:NSCalendarUnitMonth
                                      forDate:now];

    NSInteger numberOfDaysInCurrentMonth = dayRange.length;

    NSDateComponents *comp = [calendar components:
                              NSCalendarUnitYear |
                              NSCalendarUnitMonth |
                              NSCalendarUnitDay fromDate:now];

    comp.day = numberOfDaysInCurrentMonth;
    comp.hour = 24;
    comp.minute = 0;
    comp.second = 0;

    NSDate *endOfMonth = [calendar dateFromComponents:comp];

score 0 · Answer 6 · edited Jan 10 '17 at 07:35

0

Swift 3.0.1 Version

extension Date {
func lastDayOfMonth() -> Date {
    let calendar = NSCalendar.current
    let dayRange = calendar.range(of: .day, in: .month, for: self)
    let dayCount = dayRange?.count
    var comp = calendar.dateComponents([.year, .month, .day], from: self)
    comp.day = dayCount
    return calendar.date(from: comp)!
    }
}

edited Jan 10 '17 at 07:35

help-info.de

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answered Jan 10 '17 at 07:15

burakyldz

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score 0 · Answer 7 · answered May 09 '17 at 01:49

With Swift 3 & iOS 10 the easiest way I found to do this is Calendar's dateInterval(of:for:):

func monthInterval() -> DateInterval? {
    let calendar = Calendar.current
    guard let interval = calendar.dateInterval(of: .month, for: Date()) else { return nil }
    let duration = interval.duration
    // Subtract one second because dateInterval(of:for:)'s end date returns the beginning of the following month
    return DateInterval(start: interval.start, duration: duration - 1)
}

guard let interval = monthInterval() else { return }

You can then use interval.start and interval.end to get the dates you need.

score 0 · Answer 8 · answered Aug 01 '19 at 09:24

NSDate *curDate = [NSDate date];
        NSCalendar *currentCalendar = [NSCalendar currentCalendar];
        NSRange daysRange = [[NSCalendar currentCalendar] rangeOfUnit:NSCalendarUnitDay inUnit:NSCalendarUnitMonth
         forDate:curDate];
        NSDateComponents* comps = [currentCalendar components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay fromDate:curDate];
        [comps setDay:daysRange.length];
        NSDate *maximumDate = [[NSCalendar currentCalendar] dateFromComponents:comps];

score -2 · Answer 9 · answered May 05 '10 at 10:51

Workaround Function:

-(int)GetLastDayOfMonth:(NSDate *)date
{
    int last_day = 27;
    NSCalendar *cal=[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
    NSDateComponents *compsMonth = [cal components:NSWeekdayCalendarUnit | NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit fromDate:date];
    [compsMonth setDay:last_day];
    int month = [compsMonth month]; 
    while(TRUE){
        [compsMonth setDay:last_day+1];
        NSDate *dateFuture = [cal dateFromComponents:compsMonth];
        NSDateComponents *futureComps = [cal components:NSWeekdayCalendarUnit | NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit fromDate:dateFuture];
        if(month != [futureComps month]){
            return last_day;
        }
        last_day+=1;
    }
    return last_day;
}

looping is not necessary – Rob van der Veer Jul 14 '13 at 19:49 — Rob van der Veer, Jul 14 '13 at 19:49

Getting the last day of a month

9 Answers9

Swift version

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