../ dmsp_15_ephemeris_20240329.txt 29-May-2024 22:00 108156 dmsp_16_ephemeris_20240329.txt 29-May-2024 22:00 108140 dmsp_17_ephemeris_20240329.txt 29-May-2024 22:00 108271 dmsp_18_ephemeris_20240329.txt 29-May-2024 22:00 108221