../ dmsp_15_ephemeris_20121128.txt 22-Jun-2023 00:21 109354 dmsp_16_ephemeris_20121128.txt 22-Jun-2023 00:21 109427 dmsp_17_ephemeris_20121128.txt 22-Jun-2023 00:21 109384 dmsp_18_ephemeris_20121128.txt 22-Jun-2023 00:21 109484