../ dmsp_15_ephemeris_20110130.txt 22-Jun-2023 00:17 108020 dmsp_16_ephemeris_20110130.txt 22-Jun-2023 00:17 107909 dmsp_17_ephemeris_20110130.txt 22-Jun-2023 00:17 108064 dmsp_18_ephemeris_20110130.txt 22-Jun-2023 00:17 108081