../ dmsp_15_ephemeris_20150419.txt 22-Jun-2023 00:27 109558 dmsp_16_ephemeris_20150419.txt 22-Jun-2023 00:27 109620 dmsp_17_ephemeris_20150419.txt 22-Jun-2023 00:27 109710 dmsp_18_ephemeris_20150419.txt 22-Jun-2023 00:27 109593 dmsp_19_ephemeris_20150419.txt 22-Jun-2023 00:27 109740