Its a function of how P6 calculates durations for summary bands. If all tasks within a summary band use one calendar, then the summary band will also show duration using that calendar.
If there are a mix of calendars, then the summary band will use the project default calendar. So you may want to swtich 5the project default calendar to the 7 day week calendar you are using for the summary activity.
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20 years 6 monthsIts a function of how P6
Its a function of how P6 calculates durations for summary bands. If all tasks within a summary band use one calendar, then the summary band will also show duration using that calendar.
If there are a mix of calendars, then the summary band will use the project default calendar. So you may want to swtich 5the project default calendar to the 7 day week calendar you are using for the summary activity.