I've got approximately 39 hours and 58 minutes left of being in my 20's.
In case you're wondering, I plan to stay 29 up until the exact minute. I will be 29 at 7:50 a.m. I will be 29 at 7:51 a.m. However - at 7:52 a.m. I will be another year older.
I'll probably be grouchy.