Spark Plug Help

What is a "whole day" 2 4 6 hours?
I drove it for the first time about 30 minutes round trip, just stop n go from stoplight to stoplight. got home around 4pm and it sat until 10am the next day . Another part store trip 30 minute roundtrip, sat a whole day. The next day went to start it, got down the driveway and started shaking and sputtering and dead. Tried to start it again and it starts for 2 seconds before quitting.