../ dmsp_15_ephemeris_20110609.txt 22-Jun-2023 00:17 109545 dmsp_16_ephemeris_20110609.txt 22-Jun-2023 00:17 109630 dmsp_17_ephemeris_20110609.txt 22-Jun-2023 00:17 109666 dmsp_18_ephemeris_20110609.txt 22-Jun-2023 00:17 109474