\makeatletter

\usepackage{fontspec}
\defaultfontfeatures{Ligatures={TeX}}
\setmainfont{TeX Gyre Pagella}
\newfontfamily\dejaVuSans{DejaVu Sans}

\SetPhoto[bleed=3mm, file={obscure-crop}]{June}

\SetQuote[xOffset=-5mm, yOffset=-20mm]{June}{%
\raggedright
\setlength{\parskip}{10pt}%
\Large
\color{white}

I shall set forth for somewhere,\\
I shall make the reckless choice\\
Some day when they are in voice\\
And tossing so as to scare\\
The white clouds over them on.\\
I shall have less to say,\\
But I shall be gone.

\textit{The Sound of the Trees} by Robert Frost
}

\ifshowframe
  \SetCalendar[bg/.style={opacity=0.5, fill=white}]{June}
\else
  \SetCalendar[bg/.style={opacity=0.8}]{June}
\fi

\SetEvents{June}{%
  if (equals=2018-06-21)
    [day text={\dejaVuSans\char"263C}];% U+263C white sun with rays
}{%
\raggedleft
{\dejaVuSans\char"263C} June 21: Summer Solstice
}

\SetPhoto[bleed=3mm, file={obscure-crop}]{July}

\SetQuote[%
  xOffset=0.5\linewidth - 0.5\paperwidth -3mm,
  yOffset=-20mm,
]{July}{%
\begin{tikzpicture}%
\node [
  fill=white, opacity=0.6, minimum width={\paperwidth + 3mm},
  minimum height=30mm] {};%
\node [] {%
\begin{minipage}{\paperwidth + 3mm}%
\centering
\Large
\color{white}

I shall have less to say,\\
But I shall be gone.

\textit{The Sound of the Trees} by Robert Frost
\end{minipage}%
};
\end{tikzpicture}%
}

\ifshowframe
  \SetCalendar[bg/.style={opacity=0.5}]{July}
\else
  \SetCalendar[bg/.style={opacity=1}]{July}
\fi

\SetEvents{July}{
  if (equals=2018-07-27) [day text={\dejaVuSans\char"263C}];
}{%
\raggedleft
{\dejaVuSans\char"263C} July 27: Mars at Opposition
}

\SetPhoto[bleed=3mm, file={obscure-crop}, yOffset=-150mm]{August}

\SetQuote[yOffset=-3mm]{August}{%
\centering
\setlength{\parskip}{10pt}%
\Large
\color{black!80}

I shall have less to say,\\
But I shall be gone.

\textit{The Sound of the Trees} by Robert Frost
}

\ifshowframe
  \SetCalendar[bg/.style={opacity=0.5}]{August}
\else
  \SetCalendar[bg/.style={opacity=1}]{August}
\fi

\SetEvents{August}{
  if (equals=2018-08-12) [day text={\dejaVuSans\char"263C}];
}{%
\raggedleft
{\dejaVuSans\char"263C} August 12, 13: Perseids Meteor Shower
}

\makeatother

\begin{document}

\MonthPage[layout=full page, put photo=full page]{June}

\MonthPage[layout=full page, put photo=full width above calendar]{July}

\MonthPage[layout=small landscape, put photo=full width]{August}

\end{document}