../ dmsp_15_ephemeris_20111227.txt 22-Jun-2023 00:19 109338 dmsp_16_ephemeris_20111227.txt 22-Jun-2023 00:19 109329 dmsp_17_ephemeris_20111227.txt 22-Jun-2023 00:19 109355 dmsp_18_ephemeris_20111227.txt 22-Jun-2023 00:19 109291