../ dmsp_15_ephemeris_20210608.txt 22-Jun-2023 16:35 109592 dmsp_16_ephemeris_20210608.txt 22-Jun-2023 16:35 109513 dmsp_17_ephemeris_20210608.txt 22-Jun-2023 16:35 109605 dmsp_18_ephemeris_20210608.txt 22-Jun-2023 16:35 109516