../ dmsp_15_ephemeris_20211203.txt 22-Jun-2023 16:30 109267 dmsp_16_ephemeris_20211203.txt 22-Jun-2023 16:30 109373 dmsp_17_ephemeris_20211203.txt 22-Jun-2023 16:30 109301 dmsp_18_ephemeris_20211203.txt 22-Jun-2023 16:30 109303