How Long Does Someone Have to be Dead Before People stop Referring to them as Late?

[FatAndFaithless]

From the Grammarist:

In reference to a recently deceased person, the late shows respect. It’s often used to inform or remind readers that a mentioned person has died recently, and it’s sometimes a polite way of saying recently deceased, even when virtually everyone knows that the person is recently deceased. In general, it applies to anyone who has died in the last decade or so, and it almost always carries a note of reverence. So, for example, the late Osama bin Laden might strike some English speakers as too respectful.