There’s pros and cons., though personally I used this calendar for my fiction writing.

I’d like to find a way to sync the lunar cycle and solar cycles since the earth’s, moon’s, and revolutions around the sun are soooo close (5 days off) plus it’d make sense to keep in theme with the Babylonian-esque base-60 system (where 60 is readily divided and a factor of 360 days, 12 months, 30 days, etc).

Which is pretty much what the Ancient Egyptians did.

*edit: pretty much have 5 “fake days” and add a sixth “fake” day to account for the gradual desync.