JD> If I send a ping request to certain Mystic systems, the response returns
 JD> as a bad packet, with the message that the DateTime is grunged 

Thanks for the report.  This has already been fixed in the latest A48 build along with another PING related bug as well!  If notice it from any recent Mystic (say July 2022+) please let me know because then it'd mean its still broken!

... A Skydiver is taken by the gravity of his situation.

--- Mystic BBS v1.12 A48 2022/07/13 (Windows/64)