TOYOTA 2010 Matrix - Manual (Page 271)

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3-6. Other interior features
Clock
■ The clock is displayed when
The engine switch is in the “ACC” or “ON” position.
Adjusts the hour.
Adjusts the minutes.
Rounds to the nearest
hour.*
*: e.g. 1:00 to 1:29 → 1:00
1:30 to 1:59 → 2:00