../ dmsp_15_ephemeris_20170808.txt 22-Jun-2023 16:26 109511 dmsp_16_ephemeris_20170808.txt 22-Jun-2023 16:26 109612 dmsp_17_ephemeris_20170808.txt 22-Jun-2023 16:26 109692 dmsp_18_ephemeris_20170808.txt 22-Jun-2023 16:26 109608