Add today's date manually

Question

I want to add today's date, for example 10/26/2025 How do I do that?

\documentclass[20pt,margin=1in,innermargin=-4.5in,blockverticalspace=-0.25in]{tikzposter}
\geometry{paperwidth=33.11in,paperheight=46.81in} %A0
% \geometry{paperheight=33.11in,paperwidth=23.4in} %A1
\usepackage[utf8]{inputenc}
\usepackage{csquotes}
%\usepackage[estonian]{babel}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amsthm}
\usepackage{amssymb}
\usepackage{mathrsfs}
\usepackage{graphicx}
\usepackage{lipsum}
\usepackage[export]{adjustbox}
\usepackage{enumitem}
\usepackage[backend=biber,style=numeric]{biblatex}
\usepackage{unitartu-theme}
\makeatletter
\setlength{\TP@visibletextwidth}{31.0in}
\setlength{ \TP@visibletextheight}{45in}
\makeatother
\usepackage{mwe} % for placeholder images
\usepackage{bm}
\usepackage{bbm}

\addbibresource{refs.bib}

% set theme parameters
\tikzposterlatexaffectionproofoff
\usetheme{UniTartuTheme}
\usecolorstyle{UniTartuStyle}

\usepackage[scaled]{helvet}
\renewcommand\familydefault{\sfdefault} 
\renewcommand{\vec}[1]{\bm{#1}}
\newcommand{\Tr}{\text{Tr}}
\usepackage[T1]{fontenc}

%********************************************* added <<<<<<
\makeatletter
\settitle{\vspace*{-10mm} %setup the title <<<<<<<<<<<<<<<
    \centering \vbox{% 
        \@titlegraphic \\[\TP@titlegraphictotitledistance] \centering
        \color{titlefgcolor} {\bfseries \Huge \sc \@title \par}
        \vspace*{1em}
        {\huge \@author \par} \vspace*{1em} {\LARGE \@institute}
}}
\makeatother
%*****************************************************

\title{\parbox{0.8\linewidth}{UniTartuCS Poster Template - Example of a long title for a poster}}
\author{\textbf{John Smith}\textsuperscript{1}}
\institute{\textsuperscript{1}Institute of Computer Science, University of Tartu}

\titlegraphic{\includegraphics[width=\linewidth]{CONF-IOCFF-2026.jpg}} %changed. Use your bannwer <<<<<<<<<<

% begin document
\begin{document}
    \maketitle
    \centering
    \begin{columns}
        \column{0.5}
        \block{Section 1}{
            \lipsum[30]
            \begin{align*}
                \includegraphics[width=0.1\textwidth,valign=c]{example-image-a.jpg} % changed for this example
            \end{align*}
            
            \lipsum[10]
            
            \begin{align*}
                x = \frac{-b \pm\sqrtsign{b^2 - 4ac}}{2a}.
            \end{align*}
            
            \lipsum[20]
        }
        \block{Section 2}{
            \lipsum[100]
            \lipsum[100]
            \lipsum[100]
            \lipsum[100]
            \lipsum[100]
            \lipsum[100]
            \lipsum[100]
            \lipsum[100]
        }
        
        
        \column{0.5}
        \block{Section 3}{
            \lipsum[100]
            \lipsum[100]
            \textcolor{MainBlue}{\lipsum[100]}
            \lipsum[100]
            \lipsum[100]
            \lipsum[100]
            \lipsum[100]
        }
        
        \block{Conclusions}{
            \lipsum[100]
            \cite{dirac} \cite{knuthwebsite}
            \lipsum[100]
            \lipsum[100]
        }
        \block{References}{
            \lipsum[100]
            \lipsum[100]
            \begin{center}
                \mbox{}\vspace{-1\baselineskip}
                \printbibliography[heading=none] 
            \end{center}
        }
        
    \end{columns}
\end{document}

Answer 1

I was not very sure what you mean "manually" in the title, it means by hand? You can typeset it directly.

If you want TeX to auto determine the date, you can make use of \today, by latexdef \today, you get:

latexdef \today

\today:
macro:->\ifcase \month \or January\or February\or March\or April\or May\or June\or July\or August\or September\or October\or November\or December\fi \space \number \day , \number \year

Then it's easy to use macro \month, \year and \day to get what you want.

\documentclass{article}
\date{\today}
\title{My Document}
\author{me}
\begin{document}

\maketitle

Today is \texttt{\today}.

month is \texttt{\the\month}

year is \texttt{\the\year}

day is \texttt{\the\day}

Today is what you want \texttt{\the\month/\the\day/\the\year}

\end{document}

noted that in my region, today is still "2025/10/24"😀