Werk #18121: Remove 0-24 weekday prefill when adding new time period

Component Setup
Title Remove 0-24 weekday prefill when adding new time period
Date May 19, 2025
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.5.0b1
Not yet released
Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.4.0p3 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.3.0p33 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

When creating a new time period under Setup > General > Time Periods > Add Time Period, the form is pre-filled with 00:00–24:00 for all weekdays.

This is also the case when importing an iCalendar.

This default behavior could lead to confusing results when adding a time period with an "Exception (from weekdays)". For example, during an import, the pre-filled 00:00–24:00 causes the imported calendar days to be treated as exceptions to the default — effectively inverting the calendar.

With this update, we have removed the 00:00–24:00 prefill entirely. Now, all configurations must be defined explicitly.

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