../ dmsp_15_ephemeris_20120919.txt 22-Jun-2023 00:20 109648 dmsp_16_ephemeris_20120919.txt 22-Jun-2023 00:20 109697 dmsp_17_ephemeris_20120919.txt 22-Jun-2023 00:20 109685 dmsp_18_ephemeris_20120919.txt 22-Jun-2023 00:20 109567