My series Icebreaker is about ice skating, so of course it has to be skating season. My characters wear weather appropriate clothing, there's snow and ice, and they mention weather.
Sadly, I didn't do enough research on when exactly skating season takes place... So the date I put in a phone screen once is wrong... I often tend to forget that trees don't have leafs in November. I usually draw it right when the characters are outside, but when I draw a tree through a window, I always forget about the snow setting 
I have also purposefully ignored some things like times of sunsets, because I wanted a sunset for a scene even though it would be dark when it took place.
But yeah, time takes a big role in my story, since they are working towards an event that takes place in January. I am kind of nitpicky, so I even change the time that is on a phonescreen when it appears in multiple panels. I'm pretty sure no one notices this since they don't even say anything about the green trees in the BGs haha.