Editing availability dates while using timezones in mexico shift the date by an hour


This behavior has been resolved and deployed to the production environment as of 4/6/23.


When a creating user has their time zone set to Mexico City, Mazatlan, Guadalajara or Monterrey the date picker when editing an assignments availability dates will adjust the time provided to be an hour sooner than you entered if you type it in manually.

Using the drop-downs in the date picker do not cause this behavior to occur.

This behavior only occurs during the date range which used to be Mexico's daylight savings time (First April Sunday - Last Sunday in October)

Expected Behavior

Instead it should not adjust the time you entered to be incorrect when typing it manually.


No workaround exists at this time.

Steps to Reproduce

  1. Create a teacher who is enrolled in a course and set their user time zone to Mexico City, Mazatlan, Guadalajara or Monterrey.
  2. Create an Assignment or Quiz in the course and within the edit screen add availability dates by typing them manually.
  3. Such as Apr 2, 2023, 4:00 PM
  4. Notice the time is shifted to 3:00pm

Additional Info


Known issues indicate notable behaviors that has been escalated to the Canvas engineering team. Known issues are not a guarantee for an immediate resolution. This document is for informational purposes only and does not replace the Support process. If you are encountering the behavior outlined in this document, please ensure you have submitted a Support case (per your institution's escalation process) so Canvas Support can adequately gauge the overall customer impact and prioritize appropriately.

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