The most significant factor affecting our biological clocks is not the time of sunrise or sunset, but the solar noon, which stays the same year-round, summer or winter.
-sailor(Ocean & Mountain);
2021-3-13(#13569876@0)
Back then, people didn't use DST in my hometown. We had to double-confirm the time system whenever talked about appointments.
-sailor(Ocean & Mountain);
2021-3-13(#13569885@0)