http://djeyl.net/forum/index.php?showtopic=4253
This is the One i Was edditing without skills so i edited this plugin long long time ago to do the trick only twice in a day not evening, night, morning but only day, night.. it sounds stupid but it was working only when changing mapcycle to night mapcycle but when the time was server to automaticly change it to day mapcycle it just don't do the trick.. after tons of failures and thinking.. deleted the edited plugin and that's all.. no sources left to start again.. mabe anybody can modify this one to do the trick day/night mapcycle thanks again.. and one more thing.. with option to change server.cfg file or cvar at night and day.. let me explain.. at day there is freezetime 5 and at night would have freezetime 0 so ppl can frag and get some meat on small fy maps and don't get sleepy

sorry for my bad english!