../ dmsp_15_ephemeris_20220320.txt 22-Jun-2023 00:50 108204 dmsp_16_ephemeris_20220320.txt 22-Jun-2023 00:50 108235 dmsp_17_ephemeris_20220320.txt 22-Jun-2023 00:50 108240 dmsp_18_ephemeris_20220320.txt 22-Jun-2023 00:50 108239