../ dmsp_15_ephemeris_20120714.txt 22-Jun-2023 00:20 109519 dmsp_16_ephemeris_20120714.txt 22-Jun-2023 00:20 109640 dmsp_17_ephemeris_20120714.txt 22-Jun-2023 00:20 109705 dmsp_18_ephemeris_20120714.txt 22-Jun-2023 00:20 109656