During which hours can a security guard be on duty?

A security guard can be on duty 24 hours a day, depending on the employer's needs, because the requirements for security services can vary greatly based on the type of facility being protected and the specific risks involved. Some establishments may require continuous security coverage around the clock, while others may only need security during specific hours. For instance, retail locations might need guards during business hours and late into the night, whereas a high-security location may require constant monitoring at all times. This flexibility allows employers to ensure the safety and security of their property and personnel effectively.

The other options offer limited or restrictive schedules that do not reflect the diverse needs of various security roles, which is why they are less suitable as answers. Security needs are often dictated by the specific risks presented in different environments, highlighting the necessity for a workforce that can adapt to those requirements.