UTC Offset Comparison Tool
Compare local times and UTC offsets for several time zones at one moment, including daylight-saving status.
Your inputs
Results
Spread between earliest and latest zone
14 h
- America/New_York
- 2026-07-01 08:00 (UTC−04:00)
✓Exact calculation — rounded only for display
| Zone | Local time | Offset | DST status |
|---|---|---|---|
| America/New_York | 2026-07-01 08:00 | UTC−04:00 | Daylight time |
| Europe/London | 2026-07-01 13:00 | UTC+01:00 | Daylight time |
| Asia/Kolkata | 2026-07-01 17:30 | UTC+05:30 | No DST |
| Australia/Sydney | 2026-07-01 22:00 | UTC+10:00 | Standard time |
What this calculator does
Schedule meetings across teams by seeing every zone’s local time and offset at the same instant.
Formula and method
For each zone, offset = local wall-clock time − UTC at the given instant.
Worked example
Calculated by this tool with its default inputs:
Inputs
- Moment (in UTC): 2026-07-01T12:00
- Time zones to compare (IANA names, one per line): America/New_York Europe/London Asia/Kolkata Australia/Sydney
Results
- Spread between earliest and latest zone: 14 h
- America/New_York: 2026-07-01 08:00 (UTC−04:00)
How to read the results
DST status compares the offset with the zone’s January and July offsets.
Assumptions and limitations
- Southern-hemisphere zones observe daylight saving in the opposite season.
Questions
Why is Sydney on standard time in July?
July is winter in the southern hemisphere.
Methodology and verification
- Result type
- Exact mathematical calculation (rounded only for display)
- Formula version
- 1.0
- Automated verification
- 3 reference and validation test cases, checked against independently computed values. The site cannot be built if any of them fail.
- Editorial review
- Awaiting human editorial review. The explanation was drafted with AI assistance; the formula and examples are verified by the automated tests above.
Privacy
Everything you enter is calculated in this browser and is not sent to Numerith or anyone else. Inputs are added to a share link only if you choose to include them. Privacy policy