../ dmsp_15_ephemeris_20131223.txt 22-Jun-2023 00:23 109369 dmsp_16_ephemeris_20131223.txt 22-Jun-2023 00:23 109297 dmsp_17_ephemeris_20131223.txt 22-Jun-2023 00:23 109243 dmsp_18_ephemeris_20131223.txt 22-Jun-2023 00:23 109335