../ dmsp_08_ephemeris_19911218.txt 21-Jun-2023 23:44 109445 dmsp_09_ephemeris_19911218.txt 21-Jun-2023 23:44 109363 dmsp_10_ephemeris_19911218.txt 21-Jun-2023 23:44 109381 dmsp_11_ephemeris_19911218.txt 21-Jun-2023 23:44 109529