Deadline is early: October 3, and arrangements must be made by time of application with the proposed host institution, which must submit an Institutional Nomination Form. Guidelines and application forms can be found at:
http://www.sshrc.ca/web/apply/program_descriptions/fellowships/postdoctoral_e.asp
Killam postdoctoral fellowships are hosted at four universities in Canada. Each Killam host institution has its own application procedures and deadlines. The Killam institutions (with links to application information):