Komatsu PC118MR-8 Operation And Maintenance Manual page 142

INSTRUMENTS AND CONTROLS
12h/24h Mode
Select the 12 hour (am/pm) or 24 hour field.
q (b): 24 hour field
q (c): 12 hour field (am/pm)
1) If "12h/24h Mode" (a) is not highlighted in yellow, press
F6 to highlight the parameter.
2) Modify the mode as follows.
The selected mode (b or c) is highlighted in green.
q F3: Select the parameter on the left.
q F4: Select the parameter on the right.
q F5: Cancel modification and return to user menu.
q F6: Confirm modification and proceed to setting
"Daylight Saving Time".
Press F6 if the setting has been modified.
Daylight saving time
1) If daylight saving time is enabled (a), the clock display
is ahead by 1 hour. If daylight saving time is disabled
(b), the clock displays the set time.
The selected mode is highlighted in green.
2) To modify daylight saving time, proceed as follows.
q F3: Select the parameter on the left.
q F4: Select the parameter on the right.
q F5: Cancel modification and return to user menu.
q F6: Confirm modification and proceed to setting
"Time".
Press F6 if the setting has been modified.
q With daylight saving time enabled, the clock is one
hour ahead to take advantage of the fact that the sun
rises earlier in summer. This system is used in many
countries in summer.
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