How it works
Overlap hours = max(0, min(end A, end B) − max(start A, start B)).
Input definitions
- A workday start in UTC hours
- Enter the value in the labeled unit.
- A workday end in UTC hours
- Enter the value in the labeled unit.
- B workday start in UTC hours
- Enter the value in the labeled unit.
- B workday end in UTC hours
- Enter the value in the labeled unit.
A worked example
- A workday start in UTC hours
- 8
- A workday end in UTC hours
- 16
- B workday start in UTC hours
- 13
- B workday end in UTC hours
- 21
Assumptions & limits
Uses only the values entered. Rates are illustrative inputs, not live quotes, legal rules or personalised advice. Check provider terms, local requirements and measurements before acting.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-19. Content checked against the stated method and examples. Our verification approach.
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Common questions
How should overnight workdays be entered?
Convert both intervals to a continuous UTC timeline, adding 24 to an end that falls on the next day.
How does Workday time-zone overlap calculate the result?
Overlap hours = max(0, min(end A, end B) − max(start A, start B)).
What should I verify before using Workday time-zone overlap?
Uses only the values entered. Rates are illustrative inputs, not live quotes, legal rules or personalised advice. Check provider terms, local requirements and measurements before acting.