../ dmsp_15_ephemeris_20170728.txt 22-Jun-2023 16:49 109515 dmsp_16_ephemeris_20170728.txt 22-Jun-2023 16:49 109578 dmsp_17_ephemeris_20170728.txt 22-Jun-2023 16:49 109648 dmsp_18_ephemeris_20170728.txt 22-Jun-2023 16:49 109674