In Sweden, the standard time is Central European Time (CET; ; ). Daylight saving time is observed from the last Sunday in March (02:00 CET) to the last Sunday in October (03:00 CEST). Sweden adopted CET in 1900.
Times are written with the 24-hour clock, with full stops as separators (although colons are sometimes used instead of full stops).
In the IANA time zone database, Sweden is given Europe/Stockholm.