Free planning tool
When are two time zones both awake?
Choose a date and two time zones. The tool finds hourly windows that fall between 8 AM and 8 PM in both places.
Free. Values stay in your browser and are not sent to US Expat Desk. Reviewed September 2026.
Shared calling-window finder
Each candidate hour is resolved through the browser's IANA time-zone data. Missing clock times are rejected and repeated times remain visible.
Worked example
A New York household and a London contact compare one specific date before arranging a call.
Result
- summary
- 8 shared daytime windows
- slots
slots
Item
- place1
- Thu, Oct 15, 8:00 AM (America/New_York)
- place2
- Thu, Oct 15, 1:00 PM (Europe/London)
Item
- place1
- Thu, Oct 15, 9:00 AM (America/New_York)
- place2
- Thu, Oct 15, 2:00 PM (Europe/London)
Item
- place1
- Thu, Oct 15, 10:00 AM (America/New_York)
- place2
- Thu, Oct 15, 3:00 PM (Europe/London)
Item
- place1
- Thu, Oct 15, 11:00 AM (America/New_York)
- place2
- Thu, Oct 15, 4:00 PM (Europe/London)
Item
- place1
- Thu, Oct 15, 12:00 PM (America/New_York)
- place2
- Thu, Oct 15, 5:00 PM (Europe/London)
Item
- place1
- Thu, Oct 15, 1:00 PM (America/New_York)
- place2
- Thu, Oct 15, 6:00 PM (Europe/London)
Item
- place1
- Thu, Oct 15, 2:00 PM (America/New_York)
- place2
- Thu, Oct 15, 7:00 PM (Europe/London)
Item
- place1
- Thu, Oct 15, 3:00 PM (America/New_York)
- place2
- Thu, Oct 15, 8:00 PM (Europe/London)
How the result is worked out
Each candidate hour is resolved through the browser's IANA time-zone data. Missing clock times are rejected and repeated times remain visible.
Limitations
The suggested hours do not account for work schedules, religious observance, personal availability, or future time-zone rule changes.
This tool does not decide eligibility, legal obligations, document sufficiency, or official outcomes.
Sources and review
The result is deterministic and uses only the values entered. Open original sources when a planning step depends on a provider or authority.
- Daylight Saving Time. National Institute of Standards and Technology. Retrieved September 22, 2026.
- International Travel. U.S. Department of State. Retrieved September 22, 2026.
US Expat Desk is the trading name of Joao Vitor Humenhuk Achutti, a sole trader. Reviewed September 2026.
Common questions
Does shared calling-window finder decide an official requirement?
No. It organizes customer-entered planning information and never decides eligibility, legal obligations, or official deadlines.
Where are my answers stored?
The calculation runs in this browser. Your answers are not sent to US Expat Desk.
Can I export the result?
Yes. A completed result can be printed and exported in the formats shown beside the result.
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