Bluejay GTS

My watch has a “time of day” alert everyday at 1800 hrs. How do i stop it?

I am not sure, I don’t have any alarms set on mine.

But @Hammer is one of the resident experts here on that watch.

Means you have an alarm set for 6pm (1800 hrs).
Swipe down, top right Gear icon, top left time icon, top right clock icon.
It should now show both of the available alarms.
To the left of each alarm is the clock icon. If it is bright, that alarm is ON. If the icon is dim, the alarm is off.
Just hit the icon and it will turn the alarm off/on as needed.
To change the alarm, click on the icon on the right that shows the time.