../ dmsp_15_ephemeris_20211122.txt 22-Jun-2023 00:49 109420 dmsp_16_ephemeris_20211122.txt 22-Jun-2023 00:49 109445 dmsp_17_ephemeris_20211122.txt 22-Jun-2023 00:49 109418 dmsp_18_ephemeris_20211122.txt 22-Jun-2023 00:49 109376