Leave on an aux route is shown in days on your pay stub. One day in postal land equals 8 hours. When you use that leave, you use it in hours depending on how big your aux route is. If your route is 4 hours per day for instance, you would use up 0.5 of one day when you take annual leave. Your pay stub is showing 11 days and 4 hours. When you earn 4 more hours, it will show up as 12. Once you go regular, you take days off in units of 1 day instead of in hour increments. They do this because aux routes are under 8 hours long per day. Taking leave in 1-day increments would not be fair if your aux route is evaluated at 2 or 3 hours a day.