../ dmsp_15_ephemeris_20150717.txt 22-Jun-2023 16:42 109500 dmsp_16_ephemeris_20150717.txt 22-Jun-2023 16:42 109554 dmsp_17_ephemeris_20150717.txt 22-Jun-2023 16:42 109728 dmsp_18_ephemeris_20150717.txt 22-Jun-2023 16:42 109683 dmsp_19_ephemeris_20150717.txt 22-Jun-2023 16:42 109676