B minus A (hours)
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World Clock & Time Offset Difference Visualizer
Show two clocks from Date.now() plus minute offsets from UTC, and the gap between them.
Page updated 2026-09-04.
Calculator
Calculated Results
Two UTC offsets, and the exact gap between them
Clock A at UTC+0 minutes (UTC itself) currently reads 03:54:19, and Clock B at UTC+300 minutes (UTC+5:00) reads 08:54:19 -- a difference of exactly 5.00 hours, matching the 300-minute offset directly (300 / 60 = 5).
Both clocks show the same underlying moment in time, just displayed according to each location's offset from UTC -- 03:54:19 UTC and 08:54:19 at UTC+5 are simultaneous, not two different points in time; the 5-hour difference is purely a matter of how that same instant is labeled in each timezone.
Expressing offsets in minutes (rather than just whole hours) matters because not every timezone offset is a clean whole-hour value -- some regions use a 30-minute or 45-minute offset from UTC, which a minutes-based input handles correctly where a whole-hours-only input couldn't.
Why this doesn't automatically handle Daylight Saving Time
Offsets are minutes east of UTC. DST is not applied automatically. A region observing Daylight Saving Time has a UTC offset that changes twice a year -- this tool uses whatever fixed offset you enter, so during a DST transition period, the correct offset for a specific real-world location may not be the same one you'd use during the rest of the year.
'Minutes east of UTC' as the framing means a positive offset represents a location ahead of UTC (like much of Asia and Australia), while a negative offset would represent a location behind UTC (like the Americas) -- getting the sign right matters for the comparison to make sense.
This compares exactly two offsets at a time -- for tracking several locations simultaneously (a common need for distributed teams), you'd need to run this comparison multiple times, once per pair of locations you want to check against each other.
Related time-zone and scheduling tools
For a more complete timezone conversion tool that accounts for named timezones (which handle DST automatically) rather than raw UTC offsets, the Time Zone Converter is the more robust option.
Once you know the time difference between two locations, converting a specific meeting time between 12-hour and 24-hour format for clear communication is handled by the Military Time / 24-Hour Converter.
Frequently Asked Questions (FAQ)
How is the 5.00 hour difference calculated from the two offsets?
Difference in hours = (offset B - offset A) / 60 = (300 - 0) / 60 = 5.00 hours, directly converting the minute-based offset difference into hours.
Are Clock A and Clock B actually showing two different moments in time?
No -- they represent the exact same instant, just expressed according to each location's offset from UTC. 03:54:19 UTC and 08:54:19 at UTC+5 are simultaneous; the visible time difference is purely a display convention based on each region's offset.
Does this tool automatically adjust for Daylight Saving Time?
No. Offsets are minutes east of UTC. DST is not applied automatically. It uses whatever fixed offset you enter for the entire calculation. A location observing DST has an offset that changes twice a year, so you may need to manually update the offset value depending on the time of year.
Why does the offset use minutes instead of just whole hours?
Because not every real-world timezone offset from UTC is a clean whole number of hours -- some regions use a 30-minute or 45-minute offset. A minutes-based input correctly represents those non-whole-hour offsets, which a whole-hours-only field couldn't.
Can this compare more than two locations at once?
No, it compares exactly two offsets per calculation. Comparing several locations against each other would require running this tool multiple times, once for each pair of locations you want to check.
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