Wouldn't that cause exactly the same disruption to sleep? If schools and everything else suddenly starts at 7 in March after having started at 8 for 5-6 months.

Wouldn't that cause exactly the same disruption to sleep? If schools and everything else suddenly starts at 7 in March after having started at 8 for 5-6 months. And who would enforce it? What if schools move and working hours don't? I'm starting to think that 30 minute off time zone offsets are the way to go.