../ dmsp_15_ephemeris_20130121.txt 22-Jun-2023 00:21 107951 dmsp_16_ephemeris_20130121.txt 22-Jun-2023 00:21 107889 dmsp_17_ephemeris_20130121.txt 22-Jun-2023 00:21 107964 dmsp_18_ephemeris_20130121.txt 22-Jun-2023 00:21 108148