../ dmsp_15_ephemeris_20110923.txt 22-Jun-2023 00:18 109608 dmsp_16_ephemeris_20110923.txt 22-Jun-2023 00:18 109720 dmsp_17_ephemeris_20110923.txt 22-Jun-2023 00:18 109638 dmsp_18_ephemeris_20110923.txt 22-Jun-2023 00:18 109575