Apple Watch(es)

I have two watches, a Series 3 and a Series 6. One is on the charger while the other is been worn. When the Series 6 is on the charger, the alarm goes off, even when I turned the alarm off on my iPhone X the night before. I finally got it silenced by not using the bedtime feature, but the alarm still runs. I haven't seen how to shut the alarm off on the watch - especially when it is skipped on my phone which is super annoying.