../ dmsp_15_ephemeris_20170307.txt 22-Jun-2023 00:33 108140 dmsp_16_ephemeris_20170307.txt 22-Jun-2023 00:33 108201 dmsp_17_ephemeris_20170307.txt 22-Jun-2023 00:33 108171 dmsp_18_ephemeris_20170307.txt 22-Jun-2023 00:33 107954