../ dmsp_15_ephemeris_20211227.txt 22-Jun-2023 00:49 109490 dmsp_16_ephemeris_20211227.txt 22-Jun-2023 00:49 109411 dmsp_17_ephemeris_20211227.txt 22-Jun-2023 00:49 109348 dmsp_18_ephemeris_20211227.txt 22-Jun-2023 00:49 109333