You may make an appointment at any time. Just ask.
All summer, I will be in for most of the afternoon on Tuesdays, Thursdays and Fridays. Feel free to stop by.
In Term 1, I'm teaching on Monday and Wednesday nights, so I will come in later around 4, and also will stay after 9 for a while. In Term 2 I'll go back to being in most Monday and Wednesday afternoons. Feel free to stop by.