../ dmsp_15_ephemeris_20180611.txt 22-Jun-2023 00:37 109417 dmsp_16_ephemeris_20180611.txt 22-Jun-2023 00:37 109578 dmsp_17_ephemeris_20180611.txt 22-Jun-2023 00:37 109687 dmsp_18_ephemeris_20180611.txt 22-Jun-2023 00:37 109711