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Supporting time reference

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DST Checker

Check whether a selected regional time zone uses a seasonal offset on a chosen date.

London

DST activeUTC offset on this date: +01:00January offset +00:00 · July offset +01:00

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Time Zone ConverterConvert a date and time between named regional time zones.Time Difference CalculatorSee the current or date-specific hour difference between zones.Time Zone AbbreviationsReference common abbreviations and see where they are ambiguous.