../ dmsp_15_ephemeris_20181030.txt 22-Jun-2023 00:38 109460 dmsp_16_ephemeris_20181030.txt 22-Jun-2023 00:38 109489 dmsp_17_ephemeris_20181030.txt 22-Jun-2023 00:38 109479 dmsp_18_ephemeris_20181030.txt 22-Jun-2023 00:38 109388