Greetings Good People!

Could Anyone be able to Inform a ‘Newbie’ as to How to find Information on Jet Paths Morning 5.am, 21st April 2020, approx heading Nth to South down the Eastern Seaboard of Australia (Over QLD/NSW Border) 20-30,000 ft approx.
Unusual in many ways, little jet activity of late due to the C-Word and also followed by a Second Jet 20 minutes later with certain ramifications…
Any Sleuths out there that could provide Clarification for a Curious Mind?
Love Cassie
TIA