../ dmsp_15_ephemeris_20180110.txt 22-Jun-2023 16:51 108038 dmsp_16_ephemeris_20180110.txt 22-Jun-2023 16:51 107996 dmsp_17_ephemeris_20180110.txt 22-Jun-2023 16:51 107817 dmsp_18_ephemeris_20180110.txt 22-Jun-2023 16:51 107791