Our Lord was 33 years old at His death, Resurrection, and Ascension. That is the only way I've ever seen it taught. I've never heard a different number of years from ANY source.

He began His public life at 30 years old, according to the custom of His people at that time.

His public life was 3 1/3 years -- which, by the way, will be the length of Antichrist's reign as well at the end of the world.

Who said He was born "December 25, 1 AD"? I've never seen that anywhere. Why would most of the first "year of Our Lord" not even have Him born yet?
December 25th, yes. I've not seen the year added. I would assume it would be 0, not 1.

Do you really think anyone went around calling it the year 0, 1, or 2? I'm pretty sure it was made retroactive to Our Lord's birth year AFTER THE FACT. As in, they knew Our Lord was 33 when He ascended into heaven, so the early Church would have said, "OK, it's the year 33 A.D. now..."

Another small point: Unlike the Chinese and other cultures, we don't count age until a person is born -- even though they are very much a human person in the womb.

Our Lord was 33 years old at His death, Resurrection, and Ascension. That is the only way I've ever seen it taught. I've never heard a different number of years from ANY source.

He began His public life at 30 years old, according to the custom of His people at that time.

His public life was 3 1/3 years -- which, by the way, will be the length of Antichrist's reign as well at the end of the world.

Who said He was born "December 25, 1 AD"? I've never seen that anywhere. Why would most of the first "year of Our Lord" not even have Him born yet?
December 25th, yes. I've not seen the year added. I would assume it would be 0, not 1.

Do you really think anyone went around calling it the year 0, 1, or 2? I'm pretty sure it was made retroactive to Our Lord's birth year AFTER THE FACT. As in, they knew Our Lord was 33 when He ascended into heaven, so the early Church would have said, "OK, it's the year 33 A.D. now..."

Another small point: Unlike the Chinese and other cultures, we don't count age until a person is born -- even though they are very much a human person in the womb.

This ^

I can't find it at the moment, but in Ven. Mary of Agreda's Mystical City of God, she notes that man reaches his physical prime at 33 years of age, hence Our Lord's sacrifice was accomplished at the height of His human, physical perfection so that He offered to God the Father a perfect sacrifice in every aspect.

She pretty much alludes to the idea that for man, it's all down hill from there.

Calendars change. The calendar was off by a few years.

The most obvious error is that there has never been any "zero in the year of Our Lord." It is 1 BC, then 1 AD. That should not be debatable; if anyone insists against that, I would suspect they are of Antichrist (Daniel 7:25). I did not think anyone would question that the Nativity took place on 25 December, 1 AD.

Someone needs to explain the date for Good Friday if they want to say that Our Lord, the Word Incarnate, was crucified at the age of 33 years.

I would like to see more proof that St. Dismas died on 25 March 33 AD. Either the calendar year 33 AD is wrong (Julian or Gregorian), the Roman Martyrology is wrong, or there is some miracle I do not know which did something like change the moon phases visible in Jerusalem. By astronomy we know that the first full moon after the vernal equinox occurred on 3 April in 33 AD. Either way, the date of Good Friday was not the question.

Regardless of the day of the Crucifixion of Our Lord, His earthly age of 33 years still does not add up. Could someone please answer the question?

It's a very good and difficult question, one that we may never know the answer too especially in the nwo corrupt info world. I looked up the years when March 25th was on a friday and it was 29ad and 35ad. 29ad would fit the popular theory that christ was born on 4bc due to astronomical events then. But then i am trusting google to actually truthfully give me the weekday. There are so many factors that could obscure things as well like miscalculating years and days (like the julian gregorian calendar shift). The modern astronomy efforts to pin an april date by cpmbining it with a solar eclipse is all well and good for a natural event but so many of these heavenly signs were supernatural. A solar eclipse doesnt naturally explain 3 hours of darkness over all the world (yes ancient writings corroborate that the darkness also occurred in greece), and a conjunction of several planets does not naturally explain a star that moved and stopped over bethlehem. I wouldnt make dogmatic definitions based on the efforts of secularists even if they do seem clever.

As for your question, Christ was baptised on epiphany just after his 30th birthday and then just over 3 years later he was crucified. 33 and 1 third years old. He was born 25th dec 1bc (we count the new year from the octave of the nativity and his circuмcision where his blood was first shed signalling the sacrifice and redemption of man in just 8 days). So being only 8 days old at 1st Jan 1AD, Christ would have died on March 25th 34AD, so maybe our calendar is 1 year out if we have friday march 25th on 35ad.