../ dmsp_15_ephemeris_20130510.txt 22-Jun-2023 16:34 109514 dmsp_16_ephemeris_20130510.txt 22-Jun-2023 16:34 109555 dmsp_17_ephemeris_20130510.txt 22-Jun-2023 16:34 109602 dmsp_18_ephemeris_20130510.txt 22-Jun-2023 16:34 109552