Answers

2015-01-21T18:33:50+05:30
In day we have 12 hours so it coincide 12 times in a day.
in day and night we have 24 hours so it coincide 24 times in day and night..
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2015-01-21T19:31:53+05:30
In day time we have 12 hours so a clock coincide 12 times in day
in day and night time we have 24 hours so a clock coincide 24 times a day

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