../ dmsp_15_ephemeris_20180224.txt 22-Jun-2023 00:36 108153 dmsp_16_ephemeris_20180224.txt 22-Jun-2023 00:36 108246 dmsp_17_ephemeris_20180224.txt 22-Jun-2023 00:36 108147 dmsp_18_ephemeris_20180224.txt 22-Jun-2023 00:36 108086