This seems like something super minor but it actually drives me up the wall because it's actually a super common error to the point that it's pretty safe to say that the error is more common in modern language than the correct usage. The confusion of 'til and till.
'Til - a contraction of the word "until"
Till - what is done to the land before sowing seeds
It is not "Till I arrive" it's "'Til I arrive." ffs