../ dmsp_15_ephemeris_20220625.txt 22-Jun-2023 16:38 109503 dmsp_16_ephemeris_20220625.txt 22-Jun-2023 16:38 109692 dmsp_17_ephemeris_20220625.txt 22-Jun-2023 16:38 109559 dmsp_18_ephemeris_20220625.txt 22-Jun-2023 16:38 109445