../ dmsp_15_ephemeris_20201128.txt 22-Jun-2023 00:45 109533 dmsp_16_ephemeris_20201128.txt 22-Jun-2023 00:45 109484 dmsp_17_ephemeris_20201128.txt 22-Jun-2023 00:45 109480 dmsp_18_ephemeris_20201128.txt 22-Jun-2023 00:45 109435