../ dmsp_15_ephemeris_20211022.txt 22-Jun-2023 16:36 109613 dmsp_16_ephemeris_20211022.txt 22-Jun-2023 16:36 109503 dmsp_17_ephemeris_20211022.txt 22-Jun-2023 16:36 109603 dmsp_18_ephemeris_20211022.txt 22-Jun-2023 16:36 109517