UTC displayed incorrectly
As far as I am aware, all Apple products incorrectly apply time display settings (am/pm versus 24-hour) to UTC. By international standard, UTC should NEVER be displayed in 12-hour format (am/pm). Even if display settings are not set to 24-hour, UTC should still be displayed in 24-hour format. If Apple wants to offer this they should offer both GMT and UTC, since GMT can be displayed in 12-hour format.
Apple Watch Series 6, watchOS 10