../ dmsp_15_ephemeris_20220919.txt 22-Jun-2023 00:53 109656 dmsp_16_ephemeris_20220919.txt 22-Jun-2023 00:53 109640 dmsp_17_ephemeris_20220919.txt 22-Jun-2023 00:53 109680 dmsp_18_ephemeris_20220919.txt 22-Jun-2023 00:53 109564