The sky is blue, the grass is green, the ocean is wet and Joe Biden, 79, is too old to run for reelection. That’s not a remark born of ageism or anti-Democrat sentiments, it’s common sense.

After all I’m a progressive to the left of Biden, who appreciates how the septuagenarian president restored America’s faith in democracy, and the rule of law.

Biden has his defenders, notably House Speaker Nancy Pelosi, 82, and Senate Majority Leader Chuck Schumer, 71.

It’s time to turn the page, it’s time for a new generation to take over, it’s time to refresh and revigorated democracy by getting rid of this white gerontocracy.

The geriatric leadership of government is a disease that affects both parties, the Senate Republican Leader Mitch McConnell is 80, and the wretched dictator of the GOP, Donald Trump is 75.

These decrepit and doddering old politicians are the epitome of white privilege, and they should be holding court is a rest home community room and not the White House and Congress.

The average age of the Senate is 64.3 years — the oldest in history. Seven senators are in their 80s. This is an intolerable and untenable situation. By all accounts Dianne Feinstein, 88, can’t complete a coherent sentence because she has the attention span of a gnat.

Enough is enough. Joe Biden is too old. Donald Trump is too old. These old-timers think of Baby Boomers as youngsters, and they need to be put out to pasture.