There is much more with that circadian cycles. Most humans, when put in conditions where they are free to sleep and wake as they feel necessary and without ability to find time, switch to 28-30 hours cycle.

This could mean our 24 hours/day planet is either not really ours, either rotated slower in the past when humans appeared.

I personally would be much happier with 30hr/day. Running my time free, I switch to 30hrs cycle and have best and full sleep and productive 20hrs of being awake.

There is much more with that circadian cycles. Most humans, put in conditions where they are free to sleep and wake as they feel necessary and without ability to find time, switch to 28-30 hours cycle.

This could mean our 24 hours/day planet is either not really ours, either rotated slower in the past when humans appeared.

I personally would be much happier with 30hr/day.