../ dmsp_15_ephemeris_20111224.txt 22-Jun-2023 00:19 109435 dmsp_16_ephemeris_20111224.txt 22-Jun-2023 00:19 109334 dmsp_17_ephemeris_20111224.txt 22-Jun-2023 00:19 109313 dmsp_18_ephemeris_20111224.txt 22-Jun-2023 00:19 109344