../ dmsp_15_ephemeris_20190704.txt 22-Jun-2023 16:31 109589 dmsp_16_ephemeris_20190704.txt 22-Jun-2023 16:31 109505 dmsp_17_ephemeris_20190704.txt 22-Jun-2023 16:31 109696 dmsp_18_ephemeris_20190704.txt 22-Jun-2023 16:31 109598