they They changed some stuff in tibia, Tibia, now during night some monsters apear and at day some others, i Im not sure when it happened but you can also see the werewolfs apear in darashia in place of wyrm depending on time, cobras also only been spawning during day, more bats apear during night, noticed it during tournament tryng to get a cobra tongue for acess of lion rock, if you go on the way to green djiin during day you can find cobras during night you cant, dont can't, don't know if it is of any help but think cipsoft is tryng trying to show some logic on monsters respws respawns like "bats goes out at night" cobras walk around during dayday.