../ dmsp_15_ephemeris_20130202.txt 22-Jun-2023 00:21 107981 dmsp_16_ephemeris_20130202.txt 22-Jun-2023 00:21 107928 dmsp_17_ephemeris_20130202.txt 22-Jun-2023 00:21 108128 dmsp_18_ephemeris_20130202.txt 22-Jun-2023 00:21 108000