Pentax Optio A30 Operating Manual page 171

OK
7
Use the four-way controller (3) to select [DST].
8
Use the four-way controller (45) to select
[O (On) / P (Off)].
Select [O (On)] if the Destination city uses daylight saving time.
9
Press the OK button.
The World Time setting is saved.
10
Press the four-way controller (3) to select
[W (Hometown)].
Set the location and the current time in the same manner as Steps 5 to 9.
11
Press the shutter release button halfway.
The camera is ready for taking pictures.
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Set-up
Format
Sound
Date Adjust
World Time
Language/ English
Folder Name Standard
Exit
MENU
7
169