Varies from month to month, its published in the bid pack, which I'm convinced people don't actually read. For October it is as follows; RRA in DTW, JFK & MSP is 0530-1330, LGA is 0500-1300. RRP in DTW & MSP is 1330-2030, JFK and LGA is 1300-2100. RRL in DTW & LGA is 1900-2359, JFK is 1905-2359 and MSP is 1830-2359