../ dmsp_15_ephemeris_20220531.txt 22-Jun-2023 00:51 109643 dmsp_16_ephemeris_20220531.txt 22-Jun-2023 00:51 109709 dmsp_17_ephemeris_20220531.txt 22-Jun-2023 00:51 109598 dmsp_18_ephemeris_20220531.txt 22-Jun-2023 00:51 109482