../ dmsp_11_ephemeris_19991231.txt 21-Jun-2023 23:54 109505 dmsp_12_ephemeris_19991231.txt 21-Jun-2023 23:54 109340 dmsp_13_ephemeris_19991231.txt 21-Jun-2023 23:54 109315 dmsp_14_ephemeris_19991231.txt 21-Jun-2023 23:54 109434 dmsp_15_ephemeris_19991231.txt 21-Jun-2023 23:54 109460