../ dmsp_15_ephemeris_20130420.txt 22-Jun-2023 00:22 109712 dmsp_16_ephemeris_20130420.txt 22-Jun-2023 00:22 109665 dmsp_17_ephemeris_20130420.txt 22-Jun-2023 00:22 109692 dmsp_18_ephemeris_20130420.txt 22-Jun-2023 00:22 109604