../ dmsp_15_ephemeris_20131008.txt 22-Jun-2023 00:23 109625 dmsp_16_ephemeris_20131008.txt 22-Jun-2023 00:23 109509 dmsp_17_ephemeris_20131008.txt 22-Jun-2023 00:23 109697 dmsp_18_ephemeris_20131008.txt 22-Jun-2023 00:23 109598