Herod the Great died 4BC. Herod tried to kill baby Jesus in the last year of his reign. So Jesus must have lived 4BC or before.

Luke 3:23 staes that Jesus was 30 years old when he started His ministry.

Daniel 9:27 states that Jesus dies 3.5 years after the start of His Ministry.

So Jesus dies at 33.5 years of age.
33AD-33.5= 2BC -> born after Herod died.
30AD-33.5= 5BC -> born after Herod died.

Usibus/Eusebius , the earth church father tells us that from the time Titus brought about the siege of Jerusalem on Nisan 14 of 70 AD, 40 years after Jesus crucifixion on Nisan 14, 30AD.

Shannon W. Kirkpatrick is right that God loves to use special days (Sabbaths) for his timeline.
It even makes pinpointing thing easier.
The Sabbaths match exactly with the 70 weeks.
The Sabbaths even describe teh period to come.

Daniel/Antaxerxes: 6 April 454 BC the weeks of Daniel start at Passover
Birth: Sunday 10 September 5 BC => Yom Kippur = Day of anonement = Day of forgiving of sins.
Ministry: Sunday 15 September 26 AD => Sunday. Full moon. Eve of Sukkot = God lives with us.
Death: Wednesday 5 April 30 AD => Passover
Resurrection: 9 April 30 AD => The Sunday after Passover is called “Feast of first fruits”

Timeline Luke
Luke 22:1 Now the feast of unleavened bread drew nigh, which is called the Passover. (=Sabbath)
Luke 23:54 And that day was the preparation, and the sabbath drew on.
Luke 23:55 And the women also, which came with him from Galilee, followed after, and beheld the sepulchre, and how his body was laid.
Luke 23:56 And they returned, and prepared spices and ointments; and rested the sabbath day according to the commandment.
Luke 24:1 Now upon the first day (sunday) of the week, very early in the morning, they came unto the sepulchre, bringing the spices which they had prepared, ….

Combined timeline
John 12:1 Then Jesus six days before the passover (=Sabbath) came to Bethany, where Lazarus was which had been dead, whom he raised from the dead.
Mark 14:16 And his disciples went forth, and came into the city, and found as he had said unto them: and they made ready the passover. (=Sabbath)
Mark 14:12 And the first day of unleavened bread, when they killed the passover (=Sabbath), his disciples said unto him…
Mark 15:42 And now when the Wednesday even was come, because it was the preparation, that is, the day before the Passover sabbath on Thursday.
Mark 16:1 And when the Passover sabbath was past, Mary Magdalene, and Mary the mother of James, and Salome, had bought sweet spices on Friday
Luke 23:56 …. and prepared spices and ointments they just bought; and rested the Saturday sabbath day according to the commandment.
Mark 16:2 And very early in the morning the first day of the week (Sunday), they came unto the sepulchre at the rising of the sun. (Feast of First Fruits)

If we look at 33AD Passover must have on the same day as the weekly Saturday Sabbath
That gives the problem of when the women bought the spices. Mark 16:1 states it was after Sabbath. That means the women bought and prepared spices Saturday evening – Sunday dawn. Somehow it don’t believe the shops opened at night.
Further Mark 16:1 states they bought spices after the Sabbath and Luke 23:56 states the bought and then rested the Sabbath.
That’s a bit oddly phrased and even seems like a contradiction. But believing the Word is perfect and assuming there where no translation/interpretation errors in KJV I would say it are 2 half truth that need to be combined into Sabbath-buying-Sabbath
And for that only 30AD is the only possible year.
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To summarize:
The date calculations in the article are linked to a disputed date but not verified against Bible verses.

As we see God using time and again the same dates and anniversaries throughout the Bible, it would not be a stretch to say Jesus was born on one of the Jewish Holy Days. Knowing that John the Baptist’s father Zechariah was of the Abijah division, it means that that two times he served at the Temple each year would have been May/June and Nov/December. Taking that information and Luke 1, we know that John the Baptist would have been born 9 months after that, Feb/Mar or Aug/Sept. Jesus was born 6 months later, so Aug/Sept or Feb/March. There are three holy days in Tishri (Sept/Oct) and one in Nisan (March/April): Rosh Hoshanna, Yom Kippur, Succot and Passover. Rosh Hoshanna is the ‘beginning of new things’, Yom Kippur is the ‘day of atonement’, Succot is ‘when God tabernacles (lives) with us’ and Passover regards the Sacrificial Lamb. All of these resonate with Christ’s role. Since He died on Passover, if I had to make a guess, I would say He was born on one of the 3 Tishri dates in 5BC-7BC.

Tiberius became the sole ruler in 14AD, but he co-ruled with Augustus before that, starting in 11AD. So 15 years later, come springtime, would put us at 27AD or 30AD. And then adding three years of ministry would put us at 30AD or 33AD, for the year of Christ’s death.

Traditionally, it’s been believed to be 33AD, when the Passover (15th of Nisan) began at sunset of the Friday Sabbath, meaning Christ died Friday afternoon (on the 14th of Nisan).

However, it is interesting to note, that in 30AD Passover fell on a Wednesday evening/Thursday day (15th of Nisan). Which means Christ would have died on Wednesday afternoon (the 14th of Nisan).

Christ said He would be dead three days and three nights, just as Jonah was (Mat 12:40). If Christ died on 14th of Nisan 30AD, ie Wed afternoon: you would have Wed night, Thurs night, Fri night and Thur day, Fri day, Sat day. Meaning He arose from the dead sometime after sundown on Saturday, ie between around 7pm Saturday night and 5am Sunday morning (Mary Magdalene came before dawn on Sunday).

If Christ died in 33AD, on Friday afternoon, and rose very early Sunday morning, that would allow only for two nights and two days at best. (Counting Friday, Saturday and Sunday as the three days is stretching things a bit).

So if I had to make a guess (and of course it’s all conjecture), I would say Jesus was born in Tishri of either 5, 6 or 7 BC (7BC happens to be a Jubilee year) and died Wed, 14th of Nisan 30AD, putting him at 33-35 years old when He died, in alignment with Scripture.