../ dmsp_15_ephemeris_20170824.txt 22-Jun-2023 00:35 109643 dmsp_16_ephemeris_20170824.txt 22-Jun-2023 00:35 109570 dmsp_17_ephemeris_20170824.txt 22-Jun-2023 00:35 109720 dmsp_18_ephemeris_20170824.txt 22-Jun-2023 00:35 109698