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.