Formula
The difference in offsets is added to the clock:
New time = clock + (destination offset − source offset)
Offsets are hours from UTC, such as −5 or +7. The page does not look up a city or daylight saving rule.
Assumptions
- Offsets are hours, from −12 to 14.
- You account for daylight saving by the offset you type.
Worked example
15:00 at UTC−5 is 03:00 at UTC+7, one day later.
Input definitions
- UTC offset
- Hours ahead of or behind UTC.
- Hour
- A 24-hour clock hour, from 0 to 23.
Limitations
City names and daylight saving calendars are not included.
Questions
Why did the date change?
The offset gap can push the clock past midnight.
How do I enter a half-hour offset?
Type 5.5 or −3.5. The field accepts decimals.