../ dmsp_15_ephemeris_20201203.txt 22-Jun-2023 00:45 109429 dmsp_16_ephemeris_20201203.txt 22-Jun-2023 00:45 109448 dmsp_17_ephemeris_20201203.txt 22-Jun-2023 00:45 109309 dmsp_18_ephemeris_20201203.txt 22-Jun-2023 00:45 109418