../ dmsp_15_ephemeris_20110331.txt 22-Jun-2023 16:11 108326 dmsp_16_ephemeris_20110331.txt 22-Jun-2023 16:11 108284 dmsp_17_ephemeris_20110331.txt 22-Jun-2023 16:11 108228 dmsp_18_ephemeris_20110331.txt 22-Jun-2023 16:11 108371