When I arrive at an uncontrolled airport, and there's nobody there to tell me what everybody else is doing, I overfly the airport to get the lay of the land and to look at the wind sock. This should be SOP for everybody.

Once glance at the wind sock will tell you which runway the winds favor. No math or diagrams required.

You should also be looking for a tetrahedron. This will also give you information about the pattern.

Nominally, this is the authoritative answer about landing direction, but I've known airports where the tetrahedron was inoperative. If the wind is strong and the wind sock contradicts the tetrahedron, consider trusting the wind sock instead. Or better yet, consult the locals.

When I arrive at an uncontrolled airport, and there's nobody there to tell me what everybody else is doing, I overfly the airport to get the lay of the land and to look at the wind sock. This should be SOP for everybody.

One glance at the wind sock will tell you which runway the winds favor. No math or diagrams required.

You should also be looking for a tetrahedron. This will also give you information about the pattern.

Nominally, this is the authoritative answer about landing direction, but I've known airports where the tetrahedron was inoperative. If the wind is strong and the wind sock contradicts the tetrahedron, consider trusting the wind sock instead. Or better yet, consult the locals.