../ dmsp_15_ephemeris_20210702.txt 22-Jun-2023 00:47 109598 dmsp_16_ephemeris_20210702.txt 22-Jun-2023 00:47 109624 dmsp_17_ephemeris_20210702.txt 22-Jun-2023 00:47 109756 dmsp_18_ephemeris_20210702.txt 22-Jun-2023 00:47 109544