../ dmsp_15_ephemeris_20190607.txt 22-Jun-2023 16:56 109474 dmsp_16_ephemeris_20190607.txt 22-Jun-2023 16:56 109473 dmsp_17_ephemeris_20190607.txt 22-Jun-2023 16:56 109733 dmsp_18_ephemeris_20190607.txt 22-Jun-2023 16:56 109509