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Using Multiple Calendars for One Project in Microsoft Project 2010 RRS feed

  • Question

  • How do I set one task in my project to use the 24 hr calendar and the rest of my tasks to use the standard 8 hr work day?
    Thursday, July 7, 2011 9:03 PM

Answers

  • sooner1108 --

    Double-click the task to display the Task Information dialog and then click the Advanced tab.  Click the Calendar pick list at the bottom of the dialog and select the 24 Hours calendar.  Select the checkbox for the "Scheduling ignores resource calendars" option and click the OK button.  Hope this helps.


    Dale A. Howard [MVP]
    VP of Educational Services
    msProjectExperts
    http://www.msprojectexperts.com
    http://www.projectserverexperts.com
    "We write the books on Project Server"

    Thursday, July 7, 2011 9:21 PM
    Moderator

All replies

  • sooner1108 --

    Double-click the task to display the Task Information dialog and then click the Advanced tab.  Click the Calendar pick list at the bottom of the dialog and select the 24 Hours calendar.  Select the checkbox for the "Scheduling ignores resource calendars" option and click the OK button.  Hope this helps.


    Dale A. Howard [MVP]
    VP of Educational Services
    msProjectExperts
    http://www.msprojectexperts.com
    http://www.projectserverexperts.com
    "We write the books on Project Server"

    Thursday, July 7, 2011 9:21 PM
    Moderator
  • When I do this, Project does not calculate the Start and Finish dates correctly. Every task should be on an 8 hr work day schedule except one task that should be on a 24 hr schedule.  I estimated the task should take 40 days - 7/7 to 7/20 is what Project calculated.  This is not correct.  It should be 8/15 finish date.  Any idea what I'm doing wrong?  Thanks.

     

    Thursday, July 7, 2011 9:57 PM
  • sooner1108 --

    Geez, I don't know.  Why don't you send me the project so I can look at it and maybe I can figure out what you are trying to do.  Send it to me, if you are willing and/or able to do so, at:

    dale(dot)howard(at)msprojectexperts(dot)com

    I think you can figure out how to replace the (dot) text with the period character.  Let me know.  Thanks!


    Dale A. Howard [MVP]
    VP of Educational Services
    msProjectExperts
    http://www.msprojectexperts.com
    http://www.projectserverexperts.com
    "We write the books on Project Server"

    Thursday, July 7, 2011 10:31 PM
    Moderator
  • Hi ,
     
    By default, 1 day is 8 hours and 1 week is 5 days.  So 40 days Duration is 8 weeks of 5 days using the default Project calendar.  Assigning the same time but now on a 24 hour/day calendar, Project now uses it�??s 8 hours three time per day (ie 24 hours) and thus Project now applies this over the 24 hours 7 days per week : 7/7 to 7/20.  If you want Project to finish the task 8 calendar weeks later, you need to enter 1344 hours of work (24 hrs per day X 7 days per wk X 8 weeks).  If you try Tools/Options/View tab and select a Duration giving you the times of the day, you will see how Project show these calculations.  Note that with a 8 hour work day, the beginning is 0800 and the end 1700, whereas a 24 hour calendar is exactly that.  Hence, the 8 hour day calendar task ends at 1700, whereas the 24 hour calendar task ends at 0800 the following day (in effect the same moment in working time).
     
    You might like to see FAQ Item: 5. Default Working Hours
     
    FAQs, companion products and other useful Project information can be seen at this web address: http://project.mvps.org/faqs.htm
     
    Hope this helps - please let us know how you get on :-)
     
    Mike Glen
    Project MVP
    See http://tinyurl.com/2xbhc for my free Project Tutorials
    Friday, July 8, 2011 4:18 PM
    Moderator