../ dmsp_15_ephemeris_20120325.txt 22-Jun-2023 00:19 108265 dmsp_16_ephemeris_20120325.txt 22-Jun-2023 00:19 108237 dmsp_17_ephemeris_20120325.txt 22-Jun-2023 00:19 108256 dmsp_18_ephemeris_20120325.txt 22-Jun-2023 00:19 108215