../ dmsp_15_ephemeris_20170607.txt 22-Jun-2023 00:34 109365 dmsp_16_ephemeris_20170607.txt 22-Jun-2023 00:34 109516 dmsp_17_ephemeris_20170607.txt 22-Jun-2023 00:34 109557 dmsp_18_ephemeris_20170607.txt 22-Jun-2023 00:34 109598