Yup, we use the same trick in my field (IT), where we have to schedule way too many nightly maintenance actions. Always use 23:59 or 00:01, 00:00 is ambiguous about which date applies.

Technically, it's well-defined, 00:00 is the exact start of a new day. But in practice, it just confuses people.

In general, I even recommend against saying "01:00 saturday", just say "01:00 the night of friday to saturday". The former will still have a lot of people showing up on sunday early morning, 24 hours too late. (even more ambiguous is saying "01:00 saturday night")

/rant