../ dmsp_15_ephemeris_20130721.txt 22-Jun-2023 16:35 109477 dmsp_16_ephemeris_20130721.txt 22-Jun-2023 16:35 109534 dmsp_17_ephemeris_20130721.txt 22-Jun-2023 16:35 109607 dmsp_18_ephemeris_20130721.txt 22-Jun-2023 16:35 109559