../ dmsp_15_ephemeris_20210625.txt 22-Jun-2023 00:47 109454 dmsp_16_ephemeris_20210625.txt 22-Jun-2023 00:47 109606 dmsp_17_ephemeris_20210625.txt 22-Jun-2023 00:47 109562 dmsp_18_ephemeris_20210625.txt 22-Jun-2023 00:47 109454