../ dmsp_15_ephemeris_20120229.txt 22-Jun-2023 00:19 108145 dmsp_16_ephemeris_20120229.txt 22-Jun-2023 00:19 108092 dmsp_17_ephemeris_20120229.txt 22-Jun-2023 00:19 108233 dmsp_18_ephemeris_20120229.txt 22-Jun-2023 00:19 108052