../ dmsp_15_ephemeris_20181009.txt 22-Jun-2023 00:38 109700 dmsp_16_ephemeris_20181009.txt 22-Jun-2023 00:38 109543 dmsp_17_ephemeris_20181009.txt 22-Jun-2023 00:38 109428 dmsp_18_ephemeris_20181009.txt 22-Jun-2023 00:38 109590