tzwars

Daylight vs. the clock. Every row of the map is one day of the year, left to right is your local clock. Drag the green block to your working hours, then compare how each side of the timezone wars — permanent standard time, permanent DST, or seasonal switching — treats your year.

Location Lat Lng

Clock UTC offset DST policy

Work Hours 09:00–17:00 Duration h weekdays only

drag to move · drag edges to resize · arrow keys nudge 15 min (Shift = 1 h)

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of work time is in daylight

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dark starts

work days that begin before sunrise (or after sunset)

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dark ends

work days that finish after sunset (or before sunrise)

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shortest → longest day

⚔️ The scoreboard

Same place, same job — five clock policies. Best value in each column is highlighted; click a row to try that policy.

Policy	Dark starts	Dark ends	Work in daylight