../ dmsp_15_ephemeris_20170804.txt 22-Jun-2023 16:26 109572 dmsp_16_ephemeris_20170804.txt 22-Jun-2023 16:26 109529 dmsp_17_ephemeris_20170804.txt 22-Jun-2023 16:26 109690 dmsp_18_ephemeris_20170804.txt 22-Jun-2023 16:26 109596