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Countdown off by 1 Hour?

If it looks like your Countdown is 1 hour wrong, it's because clocks will change due to Daylight Saving Time (DST) before it ends.

1 Hour Too Long?

If your countdown seems to be an hour too long, it's because DST will end in the location you've entered between the start and finish of your countdown. 1 hour is repeated when clocks are turned back, and that hour is therefore added to the countdown.

If counting up, it is opposite

1 Hour Too Short?

If the countdown seems an hour too short, it's because DST will start in the location you've entered between the start and finish of your countdown. 1 hour is skipped when clocks are turned forward and that hour is subtracted from the countdown.

If counting up, it is opposite

When and where do the clocks change next?

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