../ dmsp_15_ephemeris_20170328.txt 22-Jun-2023 16:25 108091 dmsp_16_ephemeris_20170328.txt 22-Jun-2023 16:25 108248 dmsp_17_ephemeris_20170328.txt 22-Jun-2023 16:25 108216 dmsp_18_ephemeris_20170328.txt 22-Jun-2023 16:25 108223