Calculate the exact time difference between two timezones on any date. Shows both offsets, the gap in hours, weekdays and whether the date differs. All processing runs locally in your browser. Your data is not uploaded to any server.
100% Local Processing
How to Use
Find out exactly how far apart two zones are, on a specific date. Offsets change with daylight saving, so the date you pick matters.
Steps
Pick zone A and zone B from the dropdowns.
Leave the date empty for today, or choose a specific date.
Click Calculate and read the offset of each zone and the gap between them.
What the result shows
The wall clock and the UTC offset of each zone on that date.
The gap between them in hours, to two decimals.
The weekday in each zone, which can differ around midnight.
Whether both zones are on the same calendar day.
Features
Daylight saving changes are reflected for the date you choose.
Half-hour and forty-five-minute zones are handled exactly.
The UTC instant is included so the answer can be checked.
All processing runs locally in your browser. Your data is not uploaded to any server.