../ dmsp_15_ephemeris_20171211.txt 22-Jun-2023 00:36 109355 dmsp_16_ephemeris_20171211.txt 22-Jun-2023 00:36 109361 dmsp_17_ephemeris_20171211.txt 22-Jun-2023 00:36 109383 dmsp_18_ephemeris_20171211.txt 22-Jun-2023 00:36 109309