Now that so many pundits and politicians are talking about impeachment these days in Washington, D.C., I believe I’ll share an important date that’s about to pass.

On Aug. 9, many Americans will commemorate — some will cheer it, others will mourn it — the resignation of the 37th president of the United States, Richard M. Nixon.

You see, Nixon resigned because he was certain to be impeached for some serious “high crimes and misdemeanors.” The House Judiciary Committee approved articles of impeachment; the full House was certain to ratify them; the Senate then seemed certain to convict the president.

It then fell to at least one key friend of the president, Sen. Barry Goldwater, to give him the straight scoop: You don’t have enough support in the Senate to save you from conviction, Mr. President.

He quit on Aug. 9, 1974 and saved the nation the trauma of a certain conviction.

What did he do — allegedly? Well, he ordered the FBI to stonewall efforts to find the truth about who was responsible for the burglary of the Democratic National HQ office at the Watergate office complex.

That’s the real deal, folks. That’s the kind of behavior that gets presidents impeached.

The talk today? Well, it’s not even clear what in the world critics of the 44th president, Barack Obama, have in mind. They keep yammering about overuse of executive authority, even though this president has used it far less than his predecessors over the past century.

If this ridiculous discussion continues in the months to come, let’s keep in mind what happened four decades ago. A president abused his power in a serious way and had the good sense to quit his office before the U.S. Senate ran him out of town.