NSDate+nextHour category (next round hour)

NSDate+nextHour.h

#import <Foundation/Foundation.h>

@interface NSDate(nextHour)

/**
 *  Gets the next full hour from current date. For example, if now is 16:16:45, returns 17:00:00.
 *
 *  @return NSDate with next full hour (current hour + 1), 0 minutes and 0 seconds.
 */
+ (NSDate *)nextHour;

@end

NSDate+nextHour.m

#import "NSDate+nextHour.h"

@implementation NSDate(nextHour)

+ (NSDate *)nextHour {
    NSDate *now = [NSDate date];
    NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
    NSDateComponents *components = [calendar components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay|NSCalendarUnitHour fromDate:now];
    components.hour++;
    return [calendar dateFromComponents:components];
}

@end