Longest Day (light) of the Year

Today marks the end of spring and the beginning of summer. At least from and Astronomical perspective. Meteorological summer began on June 1st. But it's 6:59pm that will mark summer for the northern hemisphere and also the longest day of the year. Sure, some wise guy will say this the day we return from Daylight Savings to Standard Time we add a full hour to the day...but come on.
In Baltimore the official sunrise was 5:41am and sunset salted for 8:36pm. That gives us 14 hours and 55 minutes of daylight. While the sun angle slowly gets lower in the sky and the days slowly get shorter... there is a lag in temperature. Much like non is the high spot of the sun, but the warmest temperature is between 4pm and 5pm. The Warmest days of the year are about 1 month away- in the middle of July.
Average High Temperatures: June 20th: 84F July 20th: 88F August 20th: 85F