About Calendars and Activities
When you select or change an activity calendar, the calendar affects the following dates and date pickers:
- Start Date date picker
- Finish Date date picker
- Duration calculation
- Actual Start Date date picker
- Actual Finish Date date picker
- Actual Duration
- Forecast Start calculation
- Forecast Finish calculation
- Forecast Duration calculation
- Critical Path
- Estimate dates
- Estimate duration
- Float calculation
- Progress window Progress As Of Date date picker
- Budget and Progress options Do not allow progress entry older than the current period and Allow editing of last progress
- Any date or date only picker data element
This is how the dates are changed when the activity calendar changes. Changes occur when the schedule sheet is refreshed.
- Activity (not started): If the Start Date is affected by a new activity calendar, the Start Date and Finish Date will change to keep the Duration as specified. The system will use the next day on the calendar.
- Activity (not started): If the Finish Date is affected by a new activity calendar, the system will select either a previous or next working day on the calendar.
- Activity (in progress): If the Finish Date is affected by a new activity calendar, the system will select either a previous or next working day on the calendar. The Start Date is not affected in this case.
- Activity (completed): No impact on Start Date or Finish Date for the activity.
Last Published Wednesday, July 2, 2025