Smart Plug rules

I have a total of 9 Smart Plugs and 3 Smart Switches being controlling with Rules for household lights. All are set by rule to turn ON at Sunset.
Problem is that 6 Plugs and all 3 switches do turn ON at Sunset the other 3 Plugs turn on 3 minutes earlier. This is NOT a huge issue, but wondering why this would be happening.

@tlhutch4 I’m not sure about the Plugs but you may find some answers on the Switches and Sunset Rules here Wyze Switch and Sunset Rules - Don't Work