../ dmsp_15_ephemeris_20111203.txt 22-Jun-2023 16:31 109300 dmsp_16_ephemeris_20111203.txt 22-Jun-2023 16:31 109259 dmsp_17_ephemeris_20111203.txt 22-Jun-2023 16:31 109268 dmsp_18_ephemeris_20111203.txt 22-Jun-2023 16:31 109323