Problem:
Rounding the times ("hh:mm:ss") in column A down to the nearest 30 seconds.
Solution 1:
Use the ROUNDDOWN function as shown in the following formula:
=ROUNDDOWN(A2*24*120,0)/(120*24)
Solution 2:
Use the FLOOR function as shown in the following formula:
=FLOOR(A2,1/(24*120))
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