What trains between 8:00 - 9:00 a.m. (Monday thru Friday) from South Norwalk stop in Stamford and then continue on to Grand Central? thank you.

Prime rush hour, just show up and within 10 minutes a train will show up that stops in Stamford. Just make sure you get an express

Here's a list of some 8:09 8:18 8:29 8:40 8:49 All of these will get you to Stamford in about 10 to 20 minutes. There's an app you can download, Train Time, that will let you input destinations and times to give you a list of all trains. Hopefully that helps~