../ dmsp_15_ephemeris_20130927.txt 22-Jun-2023 00:23 109557 dmsp_16_ephemeris_20130927.txt 22-Jun-2023 00:23 109579 dmsp_17_ephemeris_20130927.txt 22-Jun-2023 00:23 109604 dmsp_18_ephemeris_20130927.txt 22-Jun-2023 00:23 109445