../ dmsp_15_ephemeris_20190520.txt 22-Jun-2023 00:40 109614 dmsp_16_ephemeris_20190520.txt 22-Jun-2023 00:40 109627 dmsp_17_ephemeris_20190520.txt 22-Jun-2023 00:40 109705 dmsp_18_ephemeris_20190520.txt 22-Jun-2023 00:40 109628