../ dmsp_15_ephemeris_20130615.txt 22-Jun-2023 00:22 109418 dmsp_16_ephemeris_20130615.txt 22-Jun-2023 00:22 109591 dmsp_17_ephemeris_20130615.txt 22-Jun-2023 00:22 109624 dmsp_18_ephemeris_20130615.txt 22-Jun-2023 00:22 109504