5 Things You Need to Know Today: July 27

Our weekday morning column, 5 Things You Need to Know, provides you with information that can help you plan your day and give you some fodder for water cooler conversations.

1. Children’s tennis classes will be held at Tufts Cummings School of Veterinary Medicine, 200 Westboro Road.

2. Chuck and Mud and the Hole Dam Band will perform at 6 p.m. on the Common as part of the summer concert series.

3. Youth trivia showdown is scheduled for 6:30 p.m. at the Grafton Public Library, 33 Grafton Common.

4. On this day in 1866, the first permanent transatlantic telegraph cable is successfully completed, stretching from Valentia Island, Ireland to the charmingly named Heart’s Content, Newfoundland. No truth to the rumor that the first words were: Can you hear me now?

5. Today’s forecast: Sunny, high 84, low 62.