../ dmsp_15_ephemeris_20170426.txt 22-Jun-2023 00:34 109662 dmsp_16_ephemeris_20170426.txt 22-Jun-2023 00:34 109551 dmsp_17_ephemeris_20170426.txt 22-Jun-2023 00:34 109782 dmsp_18_ephemeris_20170426.txt 22-Jun-2023 00:34 109591