../ dmsp_15_ephemeris_20130521.txt 22-Jun-2023 00:22 109524 dmsp_16_ephemeris_20130521.txt 22-Jun-2023 00:22 109563 dmsp_17_ephemeris_20130521.txt 22-Jun-2023 00:22 109558 dmsp_18_ephemeris_20130521.txt 22-Jun-2023 00:22 109671