../ dmsp_15_ephemeris_20221117.txt 22-Jun-2023 00:53 109338 dmsp_16_ephemeris_20221117.txt 22-Jun-2023 00:53 109379 dmsp_17_ephemeris_20221117.txt 22-Jun-2023 00:53 109375 dmsp_18_ephemeris_20221117.txt 22-Jun-2023 00:53 109406