../ dmsp_15_ephemeris_20170713.txt 22-Jun-2023 16:49 109435 dmsp_16_ephemeris_20170713.txt 22-Jun-2023 16:49 109480 dmsp_17_ephemeris_20170713.txt 22-Jun-2023 16:49 109662 dmsp_18_ephemeris_20170713.txt 22-Jun-2023 16:49 109464