Issue Summary

In the Trello Calendar view, cards with due dates on certain days of the week disappear from the monthly view and daily view after a daylight saving time (DST) clock change. The same cards display correctly in the ** weekly view. This issue has been observed by users in the America/Santiago (Chile) timezone following the spring DST transition and consistently for cards due on Mondays.

Steps to Reproduce

1. As a user in the America/Santiago region 

1. Create a card with a due date falling on a Monday after the DST transition date

1. Open the Calendar view on your board

1. Switch to monthly view

1. Observe that the card is not visible on its due date in the monthly view

1. Switch to daily view for the same date and observe the card is also not visible

1. Switch to weekly view and observe that the same card appears correctly

Expected Results

Cards with due dates should appear consistently across all Calendar view modes, including monthly, daily, and weekly views.

Actual Results

Cards with due dates on certain days (particularly Mondays) after a DST transition are not visible in the monthly view or daily view, despite appearing correctly in the weekly view. The cards and their due dates are not affected or modified in any way.

Workaround

Use the weekly view in the Trello Calendar view to see all cards with due dates. Cards are displayed correctly in this view while the fix is being rolled out.