../ dmsp_15_ephemeris_20220409.txt 22-Jun-2023 00:50 108252 dmsp_16_ephemeris_20220409.txt 22-Jun-2023 00:50 108273 dmsp_17_ephemeris_20220409.txt 22-Jun-2023 00:50 108245 dmsp_18_ephemeris_20220409.txt 22-Jun-2023 00:50 108162