Flags fly at half staff for one single purpose. To mourn the death of an important American figure such as a President. They also may be this way in light of a recent major tragedy.
A flag is flown at half-mast to indicate a death.
The Papal flag should be full staff
You only fly a Canadian flag at half mast when you are mourning.
Half mast. And yes, IMO.
30 days after death
Until after the funeral
At full mast for people to see for miles. Or at half mast if something tragic has happened.
If the flag is already up and it needs to be lowered to half-mast, you should first raise the flag to the top of the flagpole briefly before lowering it to the half-mast position. This practice signifies respect and honors the occasion. The specific time for lowering it to half-mast can depend on the guidelines provided for the event or observance, but typically it should be done at sunrise or at a designated time set by authorities.
The flag must first be hoisted to the top of the mast momentarily, and then it is lowered to the half mast position and secured.
A flag flown upside down is an official signal of distress. A flag flown at half mast, is a mark of respect or mourning.
The American Flag should always be flown higher than the state flag and should be flown a half-mast when in peril or in rememberance.
The canadian flag is flown at half mast to represent mourning.