**Before** picking timeslot, pick *duration* (15 or 30 mins) from the pull-down **above**. Every "full week of classes" I offer 120 mins. Limited/no availability = all the guaranteed timeslots were taken, in which case [suggest alternate times here](https://llee-appt-requests.youcanbook.me).
Time zone
Prof Lee's website: [http://www.cs.cornell.edu/home/llee](http://www.cs.cornell.edu/home/llee)