Where you are
Region
Country
Which part
Sunset on the day before
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Sunset on the day after
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Put the time change in your calendar
Google Calendar
Outlook
Apple Calendar
Download .ics
Apple Calendar opens the same .ics file — the last two buttons do the same thing, named twice because people look for both. The file is built in your browser and goes straight to your downloads.
The sunset time around the day
Time zone boundaries and coordinates from the IANA Time Zone Database (zone1970.tab, public domain). Transition times come from your own browser's copy of that database; sunset times are computed from the standard solar position algorithm.
English
Sunset is calculated for a representative point in each time zone, so a big zone's edges will differ by a few minutes. The hour the clocks move is exact.
Your location is read from your browser's own settings. Nothing is sent anywhere.