I still can't wrap my brain around a 1hr shift being this deadly. I assume most people get up at a different time on the weekend than during the week - how is this not causing problems? Significant air-travel can result in (significant) time-zone issues, yet people survive holidays and business trips. In my case, I seem to adapt about an hour a day to changes, which is not really noticeable when changing standard/daylight time. It's quite annoying going long distances as it leaves me somewhat adapted at the end so that I can come back home and be somewhat adapted.
What you are missing is that individual deaths will just appear as random events — you need to analyse a large number of deaths to see if there is a statistically significant change when people change time zone.
What am I missing?