../ dmsp_15_ephemeris_20131001.txt 22-Jun-2023 00:23 109584 dmsp_16_ephemeris_20131001.txt 22-Jun-2023 00:23 109550 dmsp_17_ephemeris_20131001.txt 22-Jun-2023 00:23 109571 dmsp_18_ephemeris_20131001.txt 22-Jun-2023 00:23 109680