Thanks, LV101, smiddy, and punk for posting.
LV101: Not my digs but I often stay there as caretaker! The roses you see have been maintained by me!
smiddy: I'll have to Google "night time deficits." We're on daylight savings time here. I recall from the film National Treasure that Riley mentioned DST was introduced by Ben Franklin. Can't remember why though.
punk: I think it was originally to give us daylight earlier as we approach the winter solstice. Back in the early '70s we here in the US went off temporarily and it was a problem for kids going to school in the dark, or some such.