Porch Box, Amateur
The date on Ethel's grave was January 13, 1933, which is 1-13-1933, so you want to set the numbers on the box to 1131933.
Any way that you do this is the right one, but the fastest way I've found is to turn the left knob first, then the right, and just keep alternating them until the puzzle is solved. So that's Left - Right - Left - Right - Left - Right - Left - Right.
Guide help
This is the low-spoiler guide for "Porch Box, Amateur" puzzle in Nancy Drew: Ghost of Thornton Hall. Unlike in normal walkthrough, you get gradual hints on how to solve the puzzle. Click the big button below to see your first hint. If the hint contains a spoiler, you will be warned about it before clicking.
Hints written by Lynn S. Hendricks
Lynn S. Hendricks
Among other things, I write hints for games like Nancy Drew. And I love words!