../ dmsp_15_ephemeris_20210919.txt 22-Jun-2023 17:04 109680 dmsp_16_ephemeris_20210919.txt 22-Jun-2023 17:04 109722 dmsp_17_ephemeris_20210919.txt 22-Jun-2023 17:04 109669 dmsp_18_ephemeris_20210919.txt 22-Jun-2023 17:04 109692