HOME SETUP TIMER
How long should a GE refrigerator stand after a full day on its side?
Quick answer
Use 24 hours as the starting point.
After more than a day of side transport
Start a reminder timer
24 hours
Timer has not started.
When it rings: Keep it upright before applying power.
What the source actually says
GE says a refrigerator on its side for more than a day should stand upright for 24 hours.
For shorter side transport, GE says the upright wait should equal the time spent on its side.
Source
Read the manufacturer guidance. Model instructions override this general page.