../ dmsp_15_ephemeris_20201119.txt 22-Jun-2023 00:45 109315 dmsp_16_ephemeris_20201119.txt 22-Jun-2023 00:45 109432 dmsp_17_ephemeris_20201119.txt 22-Jun-2023 00:45 109280 dmsp_18_ephemeris_20201119.txt 22-Jun-2023 00:45 109370