However, this has only been the case since 2007. In the United States and Canada, clocks are set forward by one hour on the second Sunday in March and set back by one hour on the first Sunday in November. ![]() One great example of this irregularity is daylight saving time. The Complexity of Time Data Programming.Working With Time Zones: Everything You Wish You Didn’t Need to Know.Computerphile: The Problem With Time & Timezones.Let countdown = "\(diffDateComponents.month) m: \(diffDateComponents.day) d: \(diffDateComponents.hour) h: \(diffDateComponents.Note: If you want to learn more about why time can be so complicated to deal with, then there are many great resources available on the web. Let diffDateComponents = NSCalendar.currentCalendar().components(, fromDate: currentDate, toDate: date, options: NSCalendarOptions.init(rawValue: 0)) Let currentFormatter = NSDateFormatter() ĬurrentFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"ĬurrentFormatter.timeZone = NSTimeZone(abbreviation: "GMT+2:00") Let date: NSDate = futureDateFormatter.dateFromString(releaseDate!)! Let futureDateFormatter = NSDateFormatter()įutureDateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ" You can see it "counting" when the user is scrolling up and down cells on a UITableView as the cells do refresh the view.Īnother thing is that I have on NSTimeZone of the currentDate "GMT+2:00" as it works for my time but only because I haven't figured out how to use the device NSTimeZone yet. The only thing that troubles me is that it doesn't really countdown as the user has to refresh the page for it to recount. Print("day:", daysLeft ? "N/A", "hour:", hoursLeft ? "N/A", "minute:", minutesLeft ? "N/A")ĬountDownLabel.text = "\(daysLeft ? 0) Days, \(hoursLeft ? 0) Hours, \(minutesLeft ? 0) Minutes" Let minutesLeft = CompetitionDayDifference.minute Let hoursLeft = CompetitionDayDifference.hour Let daysLeft = CompetitionDayDifference.day Let CompetitionDayDifference = calendar.dateComponents(, from: currentDate!, to: competitionDay) Let competitionDay = userCalendar.date(from: competitionDate as DateComponents)! Let currentDate = calendar.date(from: components) Let components = calendar.dateComponents(, from: date as Date) Hope that helps you guys if you're facing the same struggle as I haveĬleaned up/updated for latest Swift version of the accepted answer. Var minutesLeft = CompetitionDayDifference.minute Var hoursLeft = CompetitionDayDifference.hour Var daysLeft = CompetitionDayDifference.day ![]() finally, here we set the variable to our remaining time Let CompetitionDayDifference = ponents(ĭa圜alendarUnit, fromDate: currentDate!, toDate: competitionDay, here we change the seconds to hours,minutes and days Let da圜alendarUnit: NSCalendarUnit = (.CalendarUnitDay |. Let competitionDay = userCalendar.dateFromComponents(competitionDate)!ĬompetitionDay.timeIntervalSinceDate(currentDate!) Let userCalendar = NSCalendar.currentCalendar() Let currentDate = calendar.dateFromComponents(components) Let components = ponents(.CalendarUnitHour |. Let calendar = NSCalendar.currentCalendar() ![]() Here is the solution of how I managed to create a countdown timer to a specific NSDate, for SO allows Q and A Style Answers.
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