../ dmsp_15_ephemeris_20191004.txt 22-Jun-2023 00:42 109719 dmsp_16_ephemeris_20191004.txt 22-Jun-2023 00:42 109547 dmsp_17_ephemeris_20191004.txt 22-Jun-2023 00:42 109527 dmsp_18_ephemeris_20191004.txt 22-Jun-2023 00:42 109498