../ dmsp_15_ephemeris_20210329.txt 22-Jun-2023 00:46 108220 dmsp_16_ephemeris_20210329.txt 22-Jun-2023 00:46 108244 dmsp_17_ephemeris_20210329.txt 22-Jun-2023 00:46 108243 dmsp_18_ephemeris_20210329.txt 22-Jun-2023 00:46 108142