Great addon!
One thing irritate me:
(Android 10, Firefox 68.7.0, Dark Reader 4.9.4)

I can Dark Reader switch to "On", "Auto" (follows system dark mode), "Off". I set my system to always in dark mode but want Dark Reader to switch automatically day/night cycle (sunset/sunrise or per time). Doesn't find anything in Dark Reader settings (in Android settings very limited (only enable/disable).

I can swear there was a time option but now doesn't anymore! :(
Can anyone help please?