Is bringing my 1 month old baby out for dinner during evening time is bad for him? I heard from my family that baby should not go out at night. But my in law side have dinner and ask me to bring along my LO.

Be it 1 month old or a few months old. Ita not advisable to bring an infant out in the late evenings. They should have a routine established for them. However if its a one off, perhaps you may want to overlook it. But definitely not in a regular basis.