Today, after some deliberation, I chose to book my flight for my upcoming long-term stay in Perth to do my doctorate. (I also had to use up the refund that AirAsia granted me for the last flight I'd cancelled, as it had a three-month expiry date that was right 'round the corner.)
And so it was decided: my official date of leaving will be May 21, 2016.
On a whim, I thought I'd check back to see when I'd last left Perth after studying, as I recalled it had also been the month of May when I'd moved back home after four years in Aussieland.
Turns out it was May 21, 2006.
I swear I did not plan it this way.