Day- no light up front most of the time and no light in back a good bit of the time. If they are one, then flash up front and burst flash in back.
Evening- steady light up front and slow pulse in back.
Night- steady light up front and steady in back(most always).
My day rides consist of paved roads and gravel. On the paved roads, I am either on a 4 lane road which makes me 20+ feet away from oncoming traffic, or I am on a side road where there is little to no traffic at all. On gravel, I almost never see an oncoming vehicle. As a result, I dont feel the need/benefit of using a front light. The rare time when I will use one during day rides is if its overcast/hazy so the flash bursts can be seen on gravel roads...for the 3 vehicles oncoming vehicles.
I am way more concerned with approaching vehicles and use a rear light as a result. Luckily around me, oncoming traffic rarely drives into my lane so them seeing me half a mile away isnt a high priority.