Wasn't planning on working late but ended up leaving office at 7:45pm and it was dark out there. It was also kinda warm at 18C (66F). Today was the first time I rode in the dark with not very good rear lighting, the batteries were almost done and my light requires a screwdriver to get new batteries installed. I was almost gonna take the train home but had an itch to take the bike. Was a good ride too.