1.When answering this question, consider the social norms and etiquette related to calling people late at night. Generally, calling someone at 11 or 12 o'clock at night might be considered too late, as it could disturb their rest or sleep. 2.You can also discuss exceptions, such as emergencies or if you know the person is a night owl and would not mind receiving a call at that time. It's important to respect others' schedules and personal boundaries.