... >frequency becomes about 1/3 days near the equator (twice at lat. 60). > That is 1 per (3 days) and two per three days. --------------------------------------------------------------- -- bjorn@tt-tech.se (office) b_gimle@algonet.se (home) -- -- 59.2237N, 18.2286E, 44 m http://www.algonet.se/~b_gimle -- -- SeeSat-L / Visual Satellite Observer Home Page found at -- -- http://www.satellite.eu.org/satintro.html -- ---------------------------------------------------------------