Do arxiv moderators not work on Sundays? I have noticed one thing that whenever I submit a paper in arxiv  on Friday, they keep &quot;on hold&quot; from  Saturday to Sunday and then accept it later Monday or Tuesday.  On the other hand, it happened that when I submit a paper during Monday, Tuesday etc,  then process of submission becomes much faster. On Sunday and Saturday, the system seems to stop.
Thus: do the arxiv moderators not work on Sundays?
Yes, arXiv staff are not working on weekends. They also do not work on major holidays in the USA.