A week is a time unit equal to seven days. It is the ...
A time zone is a region that has a uniform standard time ...
A calendar is a system of organizing days for social, ...
The 12-hour clock is a time convention in which the 24 ...
Daylight saving time or summer time is the practice of ...
The Islamic calendar is a lunar calendar consisting of 12 ...
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Terms
용어사전
Followers
51
1
11
95
10
2