../ dmsp_15_ephemeris_20120709.txt 22-Jun-2023 00:20 109439 dmsp_16_ephemeris_20120709.txt 22-Jun-2023 00:20 109601 dmsp_17_ephemeris_20120709.txt 22-Jun-2023 00:20 109614 dmsp_18_ephemeris_20120709.txt 22-Jun-2023 00:20 109704