../ dmsp_15_ephemeris_20150421.txt 22-Jun-2023 00:27 109568 dmsp_16_ephemeris_20150421.txt 22-Jun-2023 00:27 109536 dmsp_17_ephemeris_20150421.txt 22-Jun-2023 00:27 109711 dmsp_18_ephemeris_20150421.txt 22-Jun-2023 00:27 109812 dmsp_19_ephemeris_20150421.txt 22-Jun-2023 00:27 109695