Check whether daylight saving time is active in any timezone on any date. Shows the offset, the standard offset and when DST applies. Free online tool. All processing runs locally in your browser. Your data is not uploaded to any server.
100% Local Processing
How to Use
Find out whether a timezone is on daylight saving time on a specific date. The answer matters for scheduling, timestamps and recurring events.
Steps
Choose a timezone. The default is your local zone.
Optionally pick a date. Leave it empty to check today.
Click Check and read whether DST is active and by how much.
What the result shows
Whether the date falls inside daylight saving time.
The UTC offset in force on that very date.
The standard offset for the zone, for comparison.
The timezone name as shown by your browser (for example Central European Summer Time).
Features
Offsets come from the browser timezone database, so DST is exact.
Works for past and future dates, not just today.
Zones without DST are identified and labelled as such.
All processing runs locally in your browser. Your data is not uploaded to any server.