When creating a Tuesday-Thursday schedule and adjusting the calendar width, such as for two column formatting, there is an unexpected vertical space on Tuesdays. This does not happen with a Monday-Wednesday schedule
\documentclass{article}
\usepackage{termcal}
\begin{document}
\begin{calendar}{8/29/2016}{3}
\setlength{\calboxdepth}{.5in}
\setlength{\calwidth}{3in} % <----- If this is set to 2in per weekday or above the problem disappears.
\skipday % Monday (no class)
\calday[Tuesday]{\classday} % Tuesday
\skipday % Wednesday (school in summer)
\calday[Thursday]{\classday} % Thursday
\skipday % Friday (no class)
\skipday\skipday % weekend (no class)
\end{calendar}
\end{document}