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Activities Spanning More Days than it should in a Primavera P6 Schedule

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Tue, 2025-06-10 10:43
karim saadi
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Hi Dears After having created and updated a CPM schedule using Primavera P6 you notice that some 1 day activities are spanning 2 days. How could this be possible? Although you are scheduling your schedule in days Primavera behind the scenes actually utilizes the hour and minute functions of a day within the program to perform the forward and backward passes. If you look a 1 day activity you may find that a 1 day duration activity actually spanning 2 days. It shows planning to start on 1 day but is forecasted to finish on the next when it should start AND finish all on the same day. SAADI.K
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Sat, 2025-06-14 02:10
#1
Patrick Weaver
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Joined: 18 Jan 2001
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The problem is almost always in the calendars - different number of hours in a day, different start times in a day, or simply a predecessor finishing half way through a day.  

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