The closest solar term to the northern hemisphere is

When the sun shines directly at the equator, it is the vernal equinox (the date is around March 2 1 day) or the autumn equinox (the date is around September 23) in the northern hemisphere; When the sun shines directly on the Tropic of Cancer, it is the summer solstice in the northern hemisphere (the date is around June 22); When the sun directly hits the tropic of Capricorn, it is the winter solstice in the northern hemisphere (the date is around 65438+February 22). According to this, it can be judged that the closest solar term to today (1June 6) is the summer solstice.

Therefore, choose: B.