../ dmsp_15_ephemeris_20170719.txt 22-Jun-2023 00:34 109490 dmsp_16_ephemeris_20170719.txt 22-Jun-2023 00:34 109484 dmsp_17_ephemeris_20170719.txt 22-Jun-2023 00:34 109575 dmsp_18_ephemeris_20170719.txt 22-Jun-2023 00:34 109612