24, as is the case with other days of the year.
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21 weeks
1 hour and 21 minutes.
1 hour = 60 minutes so 21 hours = 60*21 =1260 minutes
504 hour in 21 days
1 hour = 60 minutes⇒ 0.35 hour = 0.35 x 60 minutes= 21 minutes21 minutes