../ dmsp_15_ephemeris_20211029.txt 22-Jun-2023 00:48 109497 dmsp_16_ephemeris_20211029.txt 22-Jun-2023 00:48 109401 dmsp_17_ephemeris_20211029.txt 22-Jun-2023 00:48 109380 dmsp_18_ephemeris_20211029.txt 22-Jun-2023 00:48 109426