../ dmsp_08_ephemeris_19920521.txt 21-Jun-2023 23:44 109350 dmsp_09_ephemeris_19920521.txt 21-Jun-2023 23:44 109281 dmsp_10_ephemeris_19920521.txt 21-Jun-2023 23:44 109625 dmsp_11_ephemeris_19920521.txt 21-Jun-2023 23:44 109668