Date & Time
Time Zone
Go to Setting->System->Date & Time
Items
Description
Date
Current exact date
Time
Current time
Time Zone
Select the correct time zone
Sync mode
Manually/NTP(By default)
NTP server
pool.ntp.org(By default)
NTP port
123(By default)
NTP interval
1/2/3/4/5/6H

You can learn more about date & time on the page of OSD:
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