TIL: 'til vs. till

TIL that you can use either 'til or till, the choice is yours.  From Motivated Grammar:

Till and ’til are actually two different words with two different etymologies. Till is the earlier form, attested as early as 1330; Until is actually derived from till, not the other way around as in ’til (a backformation which showed up much later).  Both are common, so it’s up to you which one you like.