../ dmsp_15_ephemeris_20120406.txt 22-Jun-2023 00:19 108229 dmsp_16_ephemeris_20120406.txt 22-Jun-2023 00:19 108266 dmsp_17_ephemeris_20120406.txt 22-Jun-2023 00:19 108317 dmsp_18_ephemeris_20120406.txt 22-Jun-2023 00:19 108186