../ dmsp_15_ephemeris_20130115.txt 22-Jun-2023 00:21 107978 dmsp_16_ephemeris_20130115.txt 22-Jun-2023 00:21 107807 dmsp_17_ephemeris_20130115.txt 22-Jun-2023 00:21 107909 dmsp_18_ephemeris_20130115.txt 22-Jun-2023 00:21 107947