../ dmsp_15_ephemeris_20120409.txt 22-Jun-2023 00:19 109526 dmsp_16_ephemeris_20120409.txt 22-Jun-2023 00:19 109769 dmsp_17_ephemeris_20120409.txt 22-Jun-2023 00:19 109753 dmsp_18_ephemeris_20120409.txt 22-Jun-2023 00:19 109732