../ dmsp_15_ephemeris_20210606.txt 22-Jun-2023 00:47 109618 dmsp_16_ephemeris_20210606.txt 22-Jun-2023 00:47 109572 dmsp_17_ephemeris_20210606.txt 22-Jun-2023 00:47 109604 dmsp_18_ephemeris_20210606.txt 22-Jun-2023 00:47 109545