 FACT: Regarding the time of the shadow hitting the wall at 2:22 PM,  you cannot reference todays time in the computation even if you  knew the precise date the shadow was originally charted. To get an  accurate location from the cast shadow, it would be necessary to  align the shadow at 142 minutes (2 hrs., 22 minutes) past High Noon  on that given day. Thats because most populated locales in the  Colonial era 