../ dmsp_15_ephemeris_20220504.txt 22-Jun-2023 00:51 109727 dmsp_16_ephemeris_20220504.txt 22-Jun-2023 00:51 109610 dmsp_17_ephemeris_20220504.txt 22-Jun-2023 00:51 109739 dmsp_18_ephemeris_20220504.txt 22-Jun-2023 00:51 109583