Monday Chats
#sschat Social StudiesChat: Mondays, 4:00-5:00 pm MTN time
#engchat EnglishChat: Mondays, 5:00 – 6:00 pm MTN time
#tlchat Teacher Librarianchat is the second Monday of every month at 6pm MNT
#flipclass Flipped Classroom Chat Mondays 6:00 - 7:0 pm MTN time
#4thchat 4th grade teacher chat Mondays 6:00 - 7:00 pm MTN time
#edtechchat Educational Technology chat Mondays 6:00 - 7:00 pm MTN time
#kinderchat Kindergarten chat Mondays 7:00 - 8:00 pm MTN time

Tuesday Chats
#edchat EducatorChat Tuesdays, 5-6 pm MTN time
#AcAdv Academic Advisorschat Tuesdays, 6-7 pm MTN
#5thchat 5th grade teacher chat Tuesdays 7-8 pm MTN
#scichat Science teacher chat Tuesdays 7-8 pm MTN
#STEMchat STEM Chat Tuesdays 7-8 pm MTN

Wednesday Chats
#iPadchat iPads in Educationchat on Wednesdays, 11 am MTN time
#educoach Educational Coaches Chat Wednesdays, 2-3 pm MTN time
#3rdchat 3rd grade teachers chat Wednesdays, 5-6 pm MTN time
#teachchat Teacher chat Wednesdays at 7:00 pm MTN
#STEMgeniushour STEM genius hour chat Wednesdays, 8-9 pm MTN time

Thursday Chats
#gifteded Gifted Education Chat, Thursdays 11:00 am - 12:00 noon MTN time
#mathchat Math teacher chat, Thursdays, 5:00 - 6:00 pm MTN time
#tichat Technology IntegrationChat Thursdays, 6:00 pm MTN time
#globaledchat Global Educator Chat Thursdays, 6-7 pm MTN time
#tichat Technology integrators chat, Thursdays, 6-7 pm MTN time


Friday Chats
#gtchat Gifted and Talented chat Fridays at 5:00 pm MTN time

Saturday Chats
#Nt2t New teachers to Twitter chat, Saturdays 7-8 am MTN time

Sunday Chats
#21stedchat 21st Century Education Chat Sundays 6-7 pm MTN time
#1stchat 1st grade teacher chat Sundays 6-7 pm MTN time
#titletalk Librarians chat about books and promoting reading to our students 6-7 pm MTN time last Sunday of the month
#1:1chat 1:1 Chat Sundays 7-8 pm MTN time

More: http://edudemic.com/2012/09/the-top-50-education-twitter-chats-and-how-to-use-them/
Even more: http://www.cybraryman.com/chats.html