../ dmsp_15_ephemeris_20110413.txt 22-Jun-2023 00:17 109565 dmsp_16_ephemeris_20110413.txt 22-Jun-2023 00:17 109662 dmsp_17_ephemeris_20110413.txt 22-Jun-2023 00:17 109682 dmsp_18_ephemeris_20110413.txt 22-Jun-2023 00:17 109802