../ dmsp_15_ephemeris_20150811.txt 22-Jun-2023 16:20 109441 dmsp_16_ephemeris_20150811.txt 22-Jun-2023 16:20 109586 dmsp_17_ephemeris_20150811.txt 22-Jun-2023 16:20 109625 dmsp_18_ephemeris_20150811.txt 22-Jun-2023 16:20 109544 dmsp_19_ephemeris_20150811.txt 22-Jun-2023 16:20 109699