../ dmsp_15_ephemeris_20130908.txt 22-Jun-2023 00:23 109599 dmsp_16_ephemeris_20130908.txt 22-Jun-2023 00:23 109773 dmsp_17_ephemeris_20130908.txt 22-Jun-2023 00:23 109734 dmsp_18_ephemeris_20130908.txt 22-Jun-2023 00:23 109688