../ dmsp_15_ephemeris_20111114.txt 22-Jun-2023 00:18 109465 dmsp_16_ephemeris_20111114.txt 22-Jun-2023 00:18 109452 dmsp_17_ephemeris_20111114.txt 22-Jun-2023 00:18 109344 dmsp_18_ephemeris_20111114.txt 22-Jun-2023 00:18 109494