On our CodyCross answers based website we have the solution for When there are 366 days on a calendar and not 365. CodyCross game includes different missions and events which update daily so you can earn tokens that are mostly needed to help with answers for challenging clues. Now let's focus on the answer you need for When there are 366 days on a calendar and not 365 by scrolling down which is part of CodyCross Science Lesson Group Puzzle 5.