../ dmsp_15_ephemeris_20120928.txt 22-Jun-2023 00:20 109610 dmsp_16_ephemeris_20120928.txt 22-Jun-2023 00:20 109630 dmsp_17_ephemeris_20120928.txt 22-Jun-2023 00:20 109599 dmsp_18_ephemeris_20120928.txt 22-Jun-2023 00:20 109690