VA859, the Sunday MEL - SYD 1600 hours took off at 1704 with B738 VH-VUJ and is arriving at 1823 hours, 58 late.
VA686, the 1230 hours PER across to MEL (A332 VH-XFC) took off at 1331 so arrival is suggested as 1835, 35 late. Perhaps this aircraft is forming VA693 to convey Pleb Status westwards (although hard to see how it could be turned around in half an hour).
The 1255 hours DRW - MEL (VA1460, B738 VH-YFJ) took off at 1417 and should arrive at 1849 hours, 69 late.
The 1700 hours southbound from SYD to MEL, VA866 (B738 VH-VOS) was in the sky at 1754 so the expected 1909 hours arrival will be 34 minutes tardy. VA862, the 1630 hours (B737 VH-VBY) is behind it, having taken off at 1756 for a projected arrival in MEL of 1912 hours, 67 late.