../ dmsp_15_ephemeris_20230116.txt 22-Jun-2023 00:54 107967 dmsp_16_ephemeris_20230116.txt 22-Jun-2023 00:54 107953 dmsp_17_ephemeris_20230116.txt 22-Jun-2023 00:54 107955 dmsp_18_ephemeris_20230116.txt 22-Jun-2023 00:54 107998