What does duration HH.HH mean? Decimal hours vs HH:MM
Reading Time – 5 min. Duration HH.HH means hours written as a decimal. The digits after the point are a fraction of an hour, not minutes: 1.50 is 1 hour 30 minutes and 0.25 is 15 minutes. HH:MM is hours and minutes, so 1:50 is 1 hour 50 minutes.