../ dmsp_15_ephemeris_20211102.txt 22-Jun-2023 00:48 109527 dmsp_16_ephemeris_20211102.txt 22-Jun-2023 00:48 109564 dmsp_17_ephemeris_20211102.txt 22-Jun-2023 00:48 109434 dmsp_18_ephemeris_20211102.txt 22-Jun-2023 00:48 109524