Instructing is my full-time job, 6 days/week. 
I usually have availability if you have flexibility.

I schedule lessons for any day but Tues (but you can call Tues to schedule!)

• Monday, Friday, Saturday, and Sunday:   9:30 AM to 6 PM:  (weekend evenings rarely on short notice only)
• Wednesday and Thursday :  9:30 AM to 8:30 PM Eastern
• *Due to voice concerns my new limit is 2 hours of lessons per day (hope to be able to return to 3 lessons in one day) :)
• My lunch break (& walk dog) is usually something like 11:30-1:30 PM ET so I often do 1 lesson in the AM and 1/2 in the afternoon/early evening
• I often give extra time so please allow 30+ minutes between lessons, e.g. if I have a lesson 2-3 PM, next one is 3:30 or later, thanks
• I require a phone call (610-649-0750) or Skype call ("danheisman") to schedule a first lesson