The hand of a door is always determined from the push side.
The hand of a door is always determined from the outside. Door locks can be prepared for (4) different swings. Face the outside of the door to determine the hand. Here are some rules to follow:
The hand of a door is always determined from the outside. Doors equipped with exit devices swing out only, and exit device handing is designated as reverse bevel.
Floor closers may have a stop or limitation on the degrees of swing that a door will open. The purpose of this stop is to prevent the door from hitting a wall or other architectural feature. Typical swings are at 90 or 105 degrees.
Door hardware may require that a door swing to only 85 degrees to prevent exterior handles from hitting a wall. Similarly, hardware on the push side of the door may require that the door swing further than 90 degrees to clear the opening of protruding hardware.
For closers that do not have a dead stop, you may need to utilize an overhead holder/stop to prevent a door from swinging past the required stop point.