https://www.google.cz/#safe=off&output=search&sclient=psy-ab&q=excel+zji%C5%A1t%C4%9Bn%C3%AD+datumu+narozen%C3%AD&oq=excel+zji%C5%A1t%C4%9Bn%C3%AD+datumu+narozen%C3%AD&gs_l=hp.3...640.7214.0.7377.46.33.6.6.6.0.143.2835.23j10.33.0...1.0...1c.1.12.psy-ab.QrPkabKOD5c&pbx=1&bav=on.2,or.r_cp.r_qf.&bvm=bv.45960087,d.ZWU&fp=62f148b40fb5d171&biw=1366&bih=653
První 4 odkazy?