../ dmsp_15_ephemeris_20130312.txt 22-Jun-2023 00:21 108232 dmsp_16_ephemeris_20130312.txt 22-Jun-2023 00:21 108204 dmsp_17_ephemeris_20130312.txt 22-Jun-2023 00:21 108306 dmsp_18_ephemeris_20130312.txt 22-Jun-2023 00:21 108355