Daylight saving is built in
Every offset is calculated for the exact date you pick, using the time-zone database in your browser. When London moves its clocks in October, the comparison changes on that day, not before.
Time zone converter
Compare times across cities, find the hours that fall inside everyone's working day, and share the result with one link.
- Night
- Morning and evening
- Working hours (9–18)
- Selected time
Click any hour to select it. The first city is home; the date and time above are in its time zone.
Popular conversions
How it works
The first city is home
The date and time fields belong to your home city. Choose Make home on any row to compare from its point of view instead.
Share the exact moment
The page address always holds your cities, date and time. Copy the link and anyone who opens it sees the same comparison, shown in their own browser.