../ dmsp_15_ephemeris_20210309.txt 22-Jun-2023 16:29 108224 dmsp_16_ephemeris_20210309.txt 22-Jun-2023 16:29 108207 dmsp_17_ephemeris_20210309.txt 22-Jun-2023 16:29 108002 dmsp_18_ephemeris_20210309.txt 22-Jun-2023 16:29 108096