../ dmsp_15_ephemeris_20210830.txt 22-Jun-2023 16:30 109661 dmsp_16_ephemeris_20210830.txt 22-Jun-2023 16:30 109648 dmsp_17_ephemeris_20210830.txt 22-Jun-2023 16:30 109667 dmsp_18_ephemeris_20210830.txt 22-Jun-2023 16:30 109632