../ dmsp_15_ephemeris_20221101.txt 22-Jun-2023 00:53 109490 dmsp_16_ephemeris_20221101.txt 22-Jun-2023 00:53 109507 dmsp_17_ephemeris_20221101.txt 22-Jun-2023 00:53 109445 dmsp_18_ephemeris_20221101.txt 22-Jun-2023 00:53 109515