../ dmsp_15_ephemeris_20130217.txt 22-Jun-2023 00:21 108127 dmsp_16_ephemeris_20130217.txt 22-Jun-2023 00:21 108057 dmsp_17_ephemeris_20130217.txt 22-Jun-2023 00:21 108114 dmsp_18_ephemeris_20130217.txt 22-Jun-2023 00:21 108144