Huawei Honor phones, or at least some versions of them, have a bug in processing all-day events.
When you subscribe to a calendar and let Huawei Calendar handle the download, all-day events will be shown incorrectly as timed events.
However, if you let Google Calendar download the data, and then have Huawei Calendar show it, it will be displayed correctly.
If you get a dialog similar to this when subscribing to a calendar on Huawei Honor, select Google Calendar or ICSx⁵.
You will still get the events in your Huawei Calendar like you wanted, but circumventing the Huawei Calendar bug.
Updated Wed, 08 Feb 2023 12:08:23 +0000 UTC