../ dmsp_15_ephemeris_20170706.txt 22-Jun-2023 16:49 109489 dmsp_16_ephemeris_20170706.txt 22-Jun-2023 16:49 109581 dmsp_17_ephemeris_20170706.txt 22-Jun-2023 16:49 109594 dmsp_18_ephemeris_20170706.txt 22-Jun-2023 16:49 109612