Sstrhsrtj

I'm editing a tex file which generates a calendar. It works great, and I want to add text to a day on the calendar. The calendar looks like this currently:

Each cell of the calendar is generated with a command:

documentclass[12pt]{article}

usepackage{amsmath}

usepackage{color}



definecolor{WriteBgSec}{gray}{0.9}

definecolor{Black}{gray}{0}



begin{document}



newlength{DayColWidthMP}

setlength{DayColWidthMP}{0.25textwidth}



newcommand{vstrut}[2][0pt]{rule[#1]{0pt}{#2}}



% Cell format on Monthly Planner

% - template: #1 - color for day number and left rule, #2 - date number

newcommand{CellFormatMPTemplate}[2]{%

    % gray bar at the top, ~ half row width

    makebox[0pt][l]{smash[b]{color{WriteBgSec}rule[0.4baselineskip]{DayColWidthMP}{0.5baselineskip}}}%

    % thin rule to the left almost full heigh 

    {color{#1}rule[-6baselineskip]{arrayrulewidth}{6baselineskip}}%

    % right-aligned date numbers

    makebox[2.7ex]{hspace{fill}{color{#1}#2}}%

    % the column is centered so force the previous box to the left

    hspace*{fill}%

    break%

    % white last row, makes the left sided line open/incomplete (does not join the one below)

    vstrut{1em}}





% These calls are put in a tabular* to make a calendar

CellFormatMPTemplate{Black}{2}



end{document}

I'd like to add holidays below the day number, such as "New Year's Day", "Company Picnic" etc. I cannot for the life of me figure out how to get text to the right of that rule. I'm not finding much documentation, but I suspect rule doesn't support this concept of multiple lines of text inline with it?

What options do I have? Should I do something else to draw the line? Can I do something else to get multiple lines of text here?