../ dmsp_15_ephemeris_20190802.txt 22-Jun-2023 00:41 109529 dmsp_16_ephemeris_20190802.txt 22-Jun-2023 00:41 109618 dmsp_17_ephemeris_20190802.txt 22-Jun-2023 00:41 109634 dmsp_18_ephemeris_20190802.txt 22-Jun-2023 00:41 109554