../ dmsp_15_ephemeris_20180413.txt 22-Jun-2023 16:52 109641 dmsp_16_ephemeris_20180413.txt 22-Jun-2023 16:52 109596 dmsp_17_ephemeris_20180413.txt 22-Jun-2023 16:52 109794 dmsp_18_ephemeris_20180413.txt 22-Jun-2023 16:52 109627