../ dmsp_15_ephemeris_20120821.txt 22-Jun-2023 16:32 109628 dmsp_16_ephemeris_20120821.txt 22-Jun-2023 16:32 109677 dmsp_17_ephemeris_20120821.txt 22-Jun-2023 16:32 109724 dmsp_18_ephemeris_20120821.txt 22-Jun-2023 16:32 109695