../ dmsp_15_ephemeris_20120705.txt 22-Jun-2023 00:20 109530 dmsp_16_ephemeris_20120705.txt 22-Jun-2023 00:20 109670 dmsp_17_ephemeris_20120705.txt 22-Jun-2023 00:20 109729 dmsp_18_ephemeris_20120705.txt 22-Jun-2023 00:20 109598