../ dmsp_15_ephemeris_20120915.txt 22-Jun-2023 00:20 109640 dmsp_16_ephemeris_20120915.txt 22-Jun-2023 00:20 109643 dmsp_17_ephemeris_20120915.txt 22-Jun-2023 00:20 109676 dmsp_18_ephemeris_20120915.txt 22-Jun-2023 00:20 109590