../ dmsp_15_ephemeris_20131108.txt 22-Jun-2023 00:23 109502 dmsp_16_ephemeris_20131108.txt 22-Jun-2023 00:23 109455 dmsp_17_ephemeris_20131108.txt 22-Jun-2023 00:23 109499 dmsp_18_ephemeris_20131108.txt 22-Jun-2023 00:23 109415