../ dmsp_15_ephemeris_20180503.txt 22-Jun-2023 16:28 109697 dmsp_16_ephemeris_20180503.txt 22-Jun-2023 16:28 109596 dmsp_17_ephemeris_20180503.txt 22-Jun-2023 16:28 109546 dmsp_18_ephemeris_20180503.txt 22-Jun-2023 16:28 109458