../ dmsp_15_ephemeris_20131119.txt 22-Jun-2023 00:23 109404 dmsp_16_ephemeris_20131119.txt 22-Jun-2023 00:23 109411 dmsp_17_ephemeris_20131119.txt 22-Jun-2023 00:23 109439 dmsp_18_ephemeris_20131119.txt 22-Jun-2023 00:23 109387