../ dmsp_15_ephemeris_20121130.txt 22-Jun-2023 00:21 109424 dmsp_16_ephemeris_20121130.txt 22-Jun-2023 00:21 109295 dmsp_17_ephemeris_20121130.txt 22-Jun-2023 00:21 109194 dmsp_18_ephemeris_20121130.txt 22-Jun-2023 00:21 109347