Sony ZS-2000 - Manual (Page 27)

The Timer 27 GB
The Timer
To change the display to the daylight saving time
(summer time) indication
Press and hold SUMMER TIME for 2 seconds.
“Summer On” appears in the display for a few
seconds.
To cancel the summer time indication
Press and hold SUMMER TIME again.
“Summer Off” appears in the display for a few
seconds.
Note
When the Clock Auto
Adjust function works
( appears in the
display): If you change
the summer time
setting, the Clock Auto
Adjust function will be
cancelled.