Canon EOS R6 Mark II Mirrorless Camera with 24-105mm f/4-7.1 Lens - Manual (Page 899)

4.
Set daylight saving time.
Set it as necessary.
Select [ ] or [ ], then press the < > button.
When the daylight saving time is set to [ ], the time set in step 3 will
advance by 1 hour. If [ ] is set, the daylight saving time will be
canceled and the time will go back by 1 hour.
5.
Exit the setting.
Select [ OK ].
Caution
The date, time, and time zone settings may be reset when the camera is stored
without the battery, when the battery is exhausted, or when it is exposed to freezing
temperatures for an extended period. If this happens, set them once again.
After changing [
Zone/Time difference ], check that the correct date/time are set.
Note
Auto power off time may be extended while the [ : Date/Time/Zone ] screen is
displayed.
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