../ dmsp_08_ephemeris_19911231.txt 21-Jun-2023 23:44 109536 dmsp_09_ephemeris_19911231.txt 21-Jun-2023 23:44 109372 dmsp_10_ephemeris_19911231.txt 21-Jun-2023 23:44 109308 dmsp_11_ephemeris_19911231.txt 21-Jun-2023 23:44 109427