In Jaguar "DX DAY" covers 20UTC - 20UTC. This means that exactly at 20UTC Jaguar creates a new folder ("day folder") to the recording disk and all the recordings created after 20UTC will be saved to this folder. 20 UTC has been selected instead of 00UTC because this way in Europe we can save all the overnight recordings into the same folder. "DX DAY" also serves as a breakpoint for all day limited Jaguar services including YASLOG and SCANS.
"DX DAY" change is controlled and handled automatically by the system, user just has to be aware of this "day break". be aware of this "day break".