../ dmsp_15_ephemeris_20120508.txt 22-Jun-2023 00:19 109555 dmsp_16_ephemeris_20120508.txt 22-Jun-2023 00:19 109710 dmsp_17_ephemeris_20120508.txt 22-Jun-2023 00:19 109760 dmsp_18_ephemeris_20120508.txt 22-Jun-2023 00:19 109667