../ dmsp_15_ephemeris_20211118.txt 22-Jun-2023 17:04 109501 dmsp_16_ephemeris_20211118.txt 22-Jun-2023 17:04 109408 dmsp_17_ephemeris_20211118.txt 22-Jun-2023 17:04 109425 dmsp_18_ephemeris_20211118.txt 22-Jun-2023 17:04 109492