From the point of view of Winter Time -> Summer Time -> Winter Time transitions, the periodic actions are interesting. What does „every eight hours“ mean? When going to Summer Time, is it 0:00, 8:00, 16:00 or 0:00, 9:00, 17:00? What is good?
This is a companion discussion topic for the original entry at https://d2000.ipesoft.com/blog/d2000-and-work-with-time-part-2/