The Sovereign can prolong, out of marked respect for the person to be mourned, the duration of the period for general and Court mourning.
The following are regulations for Court mourning, according to the register at the Lord Chamberlain's office:—
For the King or Queen—full mourning, eight weeks; mourning, two weeks; and half-mourning, two weeks: in all, three full months.
For the son or daughter of the Sovereign—Full mourning, four weeks; mourning, one week; and half-mourning, one week: total, six weeks.
For the brother or sister of the Sovereign—full mourning, two weeks; mourning, four days; and half-mourning, two days: total, three weeks.
Nephew or niece—full mourning, one week; half-mourning, one week: total, two weeks.
Uncle or aunt—same as above.
Cousin, ten days; second cousin, seven days.