../ dmsp_15_ephemeris_20120328.txt 22-Jun-2023 00:19 108255 dmsp_16_ephemeris_20120328.txt 22-Jun-2023 00:19 108180 dmsp_17_ephemeris_20120328.txt 22-Jun-2023 00:19 108313 dmsp_18_ephemeris_20120328.txt 22-Jun-2023 00:19 108257