../ dmsp_15_ephemeris_20120307.txt 22-Jun-2023 00:19 108118 dmsp_16_ephemeris_20120307.txt 22-Jun-2023 00:19 108036 dmsp_17_ephemeris_20120307.txt 22-Jun-2023 00:19 108148 dmsp_18_ephemeris_20120307.txt 22-Jun-2023 00:19 108283