It is reaching that time of the year when it gets dark around 6 in the evening. And when this happens this is also a sign to me that it is time to turn off my central air conditioning system for the year and get ready to change over to the central heating. Not that I really would need this reminder as my body and the outside temperatures would tell me alone. But where I live, we still have warm days where you need the central air conditioning system and sometimes you forget that at night it is about to get cool out there to where you would freeze your tail off if you run the central air conditioning system unit. So the fact that it is getting dark early tells and reminds me to turn off the central air conditioning system for the day and night. Usually within a month after this, there is no more need for central air conditioning and everything is going to be changed over to the central heating on the thermostat. I thankfully also have one of those smart thermostats. And the smart thermostat actually knows when it is time to switch over most of the time. But like all computers, nothing is perfect, so I always make sure that the central air conditioning is completely off at night once it gets dark at 6pm, and then a month or so later I make sure that the central air conditioning system is not even on at all and that everything is set to the central heating system!