../ dmsp_15_ephemeris_20110211.txt 22-Jun-2023 00:17 108030 dmsp_16_ephemeris_20110211.txt 22-Jun-2023 00:17 107987 dmsp_17_ephemeris_20110211.txt 22-Jun-2023 00:17 108003 dmsp_18_ephemeris_20110211.txt 22-Jun-2023 00:17 108028