Updated days and times for Mercer County Sheriffs Office LTCF applications are as follows: Mon-Thurs 8am-11:30am and the first Saturday of every month from 8am-noon. I've been told by the fine lady there that Saturdays are PACKED so please be advised that Saturdays are NOT your best option if your in a hurry. The interview/background check takes about 10 minutes and if all goes well, you walk out with your LTC. None of that 45 day bs!