Most In-N-Out locations are open every day of the week from 10:30am until 1:00am. This means that you have plenty of time to grab a burger or some fries no matter what time of day it is. Of course, there may be some exceptions such as holidays or special events where hours could vary slightly, so it's always best to check with your local In-N-Out location before heading out. Overall, if you're looking for a tasty meal at any time between late morning and late night, chances are good that your local In-N-Out will be open and ready to serve up some delicious eats.