I'm using the following to create a diary. Suggested by Tom Bombadil Using LaTeX to keep a diary
\documentclass{tufte-book}
\usepackage{lipsum}
\newenvironment{loggentry}[2]% date, heading
{\noindent\textbf{#2}\marginnote{#1}\\}{\vspace{0.5cm}}
\begin{document}
\begin{loggentry}{2009-Oct-31}{Snow}
\lipsum[1]
\end{loggentry}
\begin{loggentry}{2010-Dez-31}{Water of Life}
\lipsum[2]
\end{loggentry}
\begin{loggentry}{2011-Nov-15}{Cold}
\lipsum[3-5]
\end{loggentry}
\begin{loggentry}{2012-Aug-24}{Sunrise}
\lipsum[6-7]
\end{loggentry}
\end{document}
The typeset document alternates page numbers, odd on the right and even on the left. This seems like good practice. However, the wider margins don't alternate. The wider margin is always on the right. It seems like the wide margin should switch sides like the page numbers.
How?