Time Zones Meeting Planner Calculator

An IANA id (Europe/Paris), an abbreviation (EST, IST, JST) or a UTC offset (UTC+05:30).
Meeting-planner mode: a comma-separated list of extra zones.
Used to flag which zones see the meeting inside working hours.
Converted date and time
2025-01-15 17:00 (Wednesday, UTC+00:00)
Time Zone Converter
Converted date
2025-01-15
Converted time
17:00
Converted date falls on
Wednesday
From zone
America/New_York
To zone
Europe/London
From zone UTC offset
UTC-05:00
To zone UTC offset
UTC+00:00
From zone offset (hours)
-5.00 h
To zone offset (hours)
0.00 h
Time difference
5.00 h
Calendar-day shift
0 days
The same instant in UTC
2025-01-15 17:00 UTC
Source time after DST resolution
12:00
Daylight-saving status of the source time
exact
Summary
2025-01-15 17:00 UTC falls inside working hours in 2 of the 5 zone(s) listed.
Worked out from IANA Time Zone Database (tzdb) and 3 other sources.
Daylight-saving rules change. Confirm the offset against a current tz database release before relying on a conversion far in the future, and confirm any medication schedule with the prescriber.

How this is worked out

5 steps
  1. Source wall time: 2025-01-15 12:00 in America/New_York, offset UTC-05:00.
  2. Convert to the absolute instant: 2025-01-15 17:00 UTC.
  3. Read that instant in Europe/London, whose offset on that date is UTC+00:00: 2025-01-15 17:00.
  4. Difference = 0 h - (-5 h) = 5 h.
  5. Working hours checked against 9:00-17:00 local.
The same instant in each zonetable
zonedatetimeweekdayoffsetwithinWorkingHours
America/New_York2025-01-1512:00WednesdayUTC-05:00Yes
Europe/London2025-01-1517:00WednesdayUTC+00:00Yes
Asia/Kolkata2025-01-1522:30WednesdayUTC+05:30No
Asia/Tokyo2025-01-1602:00ThursdayUTC+09:00No
Australia/Sydney2025-01-1604:00ThursdayUTC+11:00No

Results are general information, not financial, tax, legal, medical or engineering advice.