../ dmsp_15_ephemeris_20111202.txt 22-Jun-2023 00:18 109315 dmsp_16_ephemeris_20111202.txt 22-Jun-2023 00:18 109280 dmsp_17_ephemeris_20111202.txt 22-Jun-2023 00:18 109351 dmsp_18_ephemeris_20111202.txt 22-Jun-2023 00:18 109320