Final answer:
Quarters for muster and inspection on a ship are held before midday (ante meridiem, or a.m.) when the Sun has not yet reached the meridian. Once the Sun reaches the local meridian, the time is designated as post meridiem (p.m.).
Step-by-step explanation:
The specific time for quarters for muster and inspection on a ship can vary depending on the type of ship and its operating schedule. However, quarters are generally held before midday (ante meridiem, or a.m.) when the Sun has not yet reached the meridian. Once the Sun reaches the local meridian, the time is designated as post meridiem (p.m.). This convention helps in numbering the hours and determining when quarters should take place on a workday.