../ dmsp_15_ephemeris_20211030.txt 22-Jun-2023 17:04 109561 dmsp_16_ephemeris_20211030.txt 22-Jun-2023 17:04 109520 dmsp_17_ephemeris_20211030.txt 22-Jun-2023 17:04 109493 dmsp_18_ephemeris_20211030.txt 22-Jun-2023 17:04 109404