../ dmsp_15_ephemeris_20110425.txt 22-Jun-2023 00:17 109565 dmsp_16_ephemeris_20110425.txt 22-Jun-2023 00:17 109731 dmsp_17_ephemeris_20110425.txt 22-Jun-2023 00:17 109626 dmsp_18_ephemeris_20110425.txt 22-Jun-2023 00:17 109642