../ dmsp_15_ephemeris_20170404.txt 22-Jun-2023 16:48 108177 dmsp_16_ephemeris_20170404.txt 22-Jun-2023 16:48 108230 dmsp_17_ephemeris_20170404.txt 22-Jun-2023 16:48 108118 dmsp_18_ephemeris_20170404.txt 22-Jun-2023 16:48 108266