Hello. I remember that Garmin integration worked, then it was removed, then it was added again… However, I cannot get the entity “Next alarm time” to show anything. Other entities work fine, with delay of 2-5 hours. But no matter what, the “Next alarm time” still shows “unknown”.
The official HA Garmin integration does not exist anymore.
The only known working integration is here: GitHub - cyberjunky/home-assistant-garmin_connect: The Garmin Connect integration allows you to expose data from Garmin Connect to Home Assistant.
But that one does not support next alarm, as far, as I know.