Is it
\date{April 5, 2022}
or
\date{April 05, 2022}
Is that leading 0
necessary for days?
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\date{April 5, 2022}
or
\date{April 05, 2022}
Is that leading 0
necessary for days?
You have not provided any example but in the standard classes such as article
LaTeX does no processing of the date it is just a string that is typeset under the title so there is no format restriction:
\date{I think it's today, but it could be yesterday}
is fine.