../ dmsp_15_ephemeris_20140131.txt 22-Jun-2023 00:24 108097 dmsp_16_ephemeris_20140131.txt 22-Jun-2023 00:24 108068 dmsp_17_ephemeris_20140131.txt 22-Jun-2023 00:24 108028 dmsp_18_ephemeris_20140131.txt 22-Jun-2023 00:24 108084