../ dmsp_15_ephemeris_20130822.txt 22-Jun-2023 00:22 109571 dmsp_16_ephemeris_20130822.txt 22-Jun-2023 00:22 109540 dmsp_17_ephemeris_20130822.txt 22-Jun-2023 00:22 109680 dmsp_18_ephemeris_20130822.txt 22-Jun-2023 00:22 109636