../ dmsp_15_ephemeris_20211230.txt 22-Jun-2023 16:37 109434 dmsp_16_ephemeris_20211230.txt 22-Jun-2023 16:37 109435 dmsp_17_ephemeris_20211230.txt 22-Jun-2023 16:37 109285 dmsp_18_ephemeris_20211230.txt 22-Jun-2023 16:37 109356