../ dmsp_15_ephemeris_20220411.txt 22-Jun-2023 00:50 109658 dmsp_16_ephemeris_20220411.txt 22-Jun-2023 00:50 109616 dmsp_17_ephemeris_20220411.txt 22-Jun-2023 00:50 109635 dmsp_18_ephemeris_20220411.txt 22-Jun-2023 00:50 109635