../ dmsp_15_ephemeris_20180104.txt 22-Jun-2023 16:51 106560 dmsp_16_ephemeris_20180104.txt 22-Jun-2023 16:51 106603 dmsp_17_ephemeris_20180104.txt 22-Jun-2023 16:51 106391 dmsp_18_ephemeris_20180104.txt 22-Jun-2023 16:51 106512