To Do: completedDateTime and timezone

Timo 11 Reputation points

Goal: retrieve list of completed To Dos of a users for a given day.

The description of completedDateTime states that it refers to the timezone specified (link to doc). However it appears that the returned date value is always UTC midnight

Repo: I created and completed a test todo with the official Microsoft To Do app today on September 27th with my device set to "Denver - Standard Mountain Time" (local time 1 AM). When I list the todos via the API and specify the header "Prefer: outlook.timezone='America/Denver'", it returns:

  "completedDateTime": {  
    "dateTime": "2021-09-26T18:00:00",  
    "timeZone": "Mountain Standard Time"  

This is not correct. I completed the todo on September 27th - not September 26th.
What am I doing wrong?

This bug/question has been asked previously on GitHub but was closed:
It also was confirmed to be a bug there.

Microsoft Graph to Do Tasks API
{count} votes

3 answers

Sort by: Most helpful
  1. Shweta Choudhary 596 Reputation points Microsoft Employee

    Thank you for reaching out.

    This is a known issue
    Unfortunately, I do not have any ETA as of now on this.

    Hope this helps.

  2. Timo 11 Reputation points

    Almost 3 years after I first reported this bug and it's still unfixed.

    Are there any plans to fix this in the future? @Shweta Choudhary

    0 comments No comments

  3. Constantin Kwiatkowski 45 Reputation points

    Same issue with start date time and due date time, is there any workaround?

    0 comments No comments