Forum Discussion

Oilschedule's avatar
Oilschedule
Copper Contributor
Feb 03, 2023

How to update Project Calendar & Keep Start / Finish Dates the same

I created a new schedule and set the durations to give me the correct Start and Finish Dates, however I forgot to change the calendar at the beginning from the standard default, which is 5 days a wee...
Ignacio_Martin's avatar
Ignacio_Martin
Iron Contributor
Feb 07, 2023

Oilschedule 

 

Hello

 

In response your request to keep the scheduled dates after changing project calendar, you can try this experimental procedure, following the steps below:

 

In the initial project file, and before changing the calendar from 5 to 7 days

 

  1. Make backup copy of the file
  2. Establish a baseline that is free, such as Baseline 5, for example, which will serve as visual reference in the Gantt, by selecting: (Menu / Project / Schedule / Establish Baseline...Entire project, and OK)
  3. Select Baseline 5, in: (Gantt Chart Format / Bar Styles / Baseline)
  4. Hide, if not already, the Project Summary Task, in: (Gantt Chart Format / Show or Hide)
  5. Shows, if not, the column % Complete
  6. Insert a column of a custom text field into the table, such as Text1, for example
  7. Copy column % Complete to Text1
  8. Copies at the same time to the clipboard (memory), the contiguous columns, Start  and Finish
  9. Modify your calendar from 5 to 7 working days per week
  10. Select all the tasks of the project (click upper left corner of the table)
  11. Select these three options at once: Percet complete = 0%, Duration = 0 day, and Schedule Mode = Manually Scheduled; in the General tab, through: (Menu / Task / Properties / Information, and OK)
  12. Pastes the Start and Finish columns from the clipboard (in memory), onto those columns
  13. Copy and Paste the column Text1 in % Complete
  14. Select all tasks of the project (click upper left corner of the table)
  15. Select Auto Schedule option, in Menu / Task / Tasks

 

Note.- It must be manually adjusted, increasing or reducing the lag of the links other than 0 days, when the successor task does not coincide with the initial dates of the 5-day calendar.

 

Select: Baseline 5, under Gantt Chart Format / Bar Styles / Baseline, to hide the Baseline 5 bar on the Gantt.

 

Note: Other variables such as Task type, other Constraints date, Task calendars, Resource work, Costs, etc. could influence the result sought, and would require a more exhaustive analysis.

 

I hope you find it useful.

 

Ignacio Martín

Resources