\begingroup
\catcode`\-=12
\catcode`\/=12
\catcode`\.=12
\catcode`\:=12
\catcode`\+=12
\catcode`\-=12
\gdef\pgfrevision{3.1.9a}
\gdef\pgfversion{3.1.9a}
\gdef\pgfversiondatetime{2021-05-15 12:06:55 +0200}
\gdef\pgfrevisiondatetime{2021-05-15 12:06:55 +0200}
\gdef\pgf@glob@TMPa#1-#2-#3 #4\relax{#1/#2/#3}
\xdef\pgfversiondate{\expandafter\pgf@glob@TMPa\pgfversiondatetime\relax}
\xdef\pgfrevisiondate{\expandafter\pgf@glob@TMPa\pgfrevisiondatetime\relax}
\endgroup