Round time to nearest 15min interval in Excel

Question

I\'ve an excel spreadsheet with a column which has the date and time of a particular event. I would like to round this to the nearest 15 minute interval so that I can count

Answer 1

Keep it simple. Rounds to the closest 15 minute interval.

= ROUND(B2 * 24 * 4, 0) / 4 / 24