../ dmsp_15_ephemeris_20120629.txt 22-Jun-2023 00:20 109552 dmsp_16_ephemeris_20120629.txt 22-Jun-2023 00:20 109614 dmsp_17_ephemeris_20120629.txt 22-Jun-2023 00:20 109580 dmsp_18_ephemeris_20120629.txt 22-Jun-2023 00:20 109557