Not true. At least not in every case. The FAA most definitely uses 00:00 to signify midnight within the national airspace system.
Mardet and jgremlin are both correct but 00:00 in a Swift pplan means no appointment has been set. That can be a bad thing when the dispatch shows an impossible delivery time. Mac22 is your friend; do your loaded call and the mac22 at the same time. Frank
Yea, if it's 00:00 and a live unload .. lookout! Can mean it's one of those jerky places with militant rules about appointment times and what not. So of course you'll get a message several hours later that the appt. is for 2 hours before you could ever get there. Mac 22 time, reason: no appt. time given on preplan. Of course once you do get there, the final will ##### that you are late, then take however (super) long they feel like to unload you as a 'favor'. And probably forget about detention pay... You didn't 'make your appointment on time'!