../ dmsp_15_ephemeris_20120328.txt 22-Jun-2023 16:31 108255 dmsp_16_ephemeris_20120328.txt 22-Jun-2023 16:31 108180 dmsp_17_ephemeris_20120328.txt 22-Jun-2023 16:31 108313 dmsp_18_ephemeris_20120328.txt 22-Jun-2023 16:31 108257