OCT 4 2021, date of last Christ's warning to prepare our stuff, was the last day of the Julian calendar in 1582. The next day, starting at noon on OCT 4 in NZ (07:00 + 300 minutes), was Friday OCT 15, first day of the Gregorian calendar. The 10 days in-between were the 'rendezvous with the moon from Tishri 28 (OCT 5) to Heshvan 7 (OCT 14)', in 2021 only, when counting the first day of the month when the new moon is actually visible.

The passage from the Julian calendar on OCT 4 to the Gregorian calendar on OCT 15, in 2021, is what Christ meant with 'the end is the beginning, now', aka His presence in the world from His former calendar to His new one, when we would expect Him to say 'the beginning is the end'.

Besides, the very location of the Golgotha, He actually told Eve the hill to be Himself, is symbolical of three additional days before His resurrection, i.e. from OCT 15 to OCT 17 included.

Up to you to conclude...when we leave.