../ dmsp_15_ephemeris_20221120.txt 22-Jun-2023 00:53 109370 dmsp_16_ephemeris_20221120.txt 22-Jun-2023 00:53 109427 dmsp_17_ephemeris_20221120.txt 22-Jun-2023 00:53 109307 dmsp_18_ephemeris_20221120.txt 22-Jun-2023 00:53 109291