../ dmsp_15_ephemeris_20170928.txt 22-Jun-2023 00:35 109592 dmsp_16_ephemeris_20170928.txt 22-Jun-2023 00:35 109624 dmsp_17_ephemeris_20170928.txt 22-Jun-2023 00:35 109563 dmsp_18_ephemeris_20170928.txt 22-Jun-2023 00:35 109558