Is the orientation of a grave facing East required in the Catholic Church?

I noticed in a local rural cemetary that all the graves run east-west. It also appears that the Head stones are on the West end of the vault/coffin. Thus, I intuit that the Head is near the West placed stone, so as implied in Matthew 24:27 the body will rise facing east. I also understand this is generally normal for Catholic cemeteries. Note: This was not a Catholic cemetery. 1.) Generally, do Catholic cemeteries follow the same tradition or would the head of the coffin for some reason face West? 2.) Considering the image below, I would think you would need to stand facing West to read the print normally. The vault/coffin would be there in front of you -- east side of the headstone. Is this a correct understanding? 3) Another Catholic cemetery is similar to this image but the printing is on the other side(west) of the headstone. This seems to be at odds with tradition?