Check out these five things you should know for today, June 17.

1. Today starts the second round of the U.S. Open. Rory McIlroy is leading by three strokes at six under par after the first day.

2. The weather for this weekend looks like it's going to be rainy. The National Weather Service has thunderstorms for Saturday and Sunday.

3. Apparently it's also National Flip Flop Day. Ah summer.

4. Igor Stravinsky would be 128 if he were alive today.

5. Today in 1939 Eugene Weldman was the last man guillotined in Franc.