Is it permissible for a man to pause the rotational division (of nights) on the day of Eid and spend it with both of his wives?

If the two women agree to that, then there is no harm. However, if the woman whose turn it is insists on her day, it is her right. It is recommended to be lenient in this matter so that the day of Eid becomes a day of gathering for everyone and a source of joy for the people.