../ dmsp_15_ephemeris_20130306.txt 22-Jun-2023 00:21 108279 dmsp_16_ephemeris_20130306.txt 22-Jun-2023 00:21 108063 dmsp_17_ephemeris_20130306.txt 22-Jun-2023 00:21 108225 dmsp_18_ephemeris_20130306.txt 22-Jun-2023 00:21 108224