../ dmsp_15_ephemeris_20240406.txt 01-Jun-2024 18:00 108278 dmsp_16_ephemeris_20240406.txt 01-Jun-2024 18:00 108165 dmsp_17_ephemeris_20240406.txt 01-Jun-2024 18:00 108243 dmsp_18_ephemeris_20240406.txt 01-Jun-2024 18:00 108171