Here is a dynamic collection of proposed birth and death dates for Jesus Christ. Let me know which theories I’ve missed.
BIRTH
7 BC — August 21 (The Urantia Book)
6 BC — March 20 (Jonathan Cahn)
His detective work, drawing from Scripture and Jewish Laws, Traditions, and on Hebrew Holy Days, leads him to propose Nisan 1, 3756i.e. March 20, 6 BC.
6 BC — April 16 (Jerry Grover)
3 BC — September 11 (Joseph Leonard)
https://truthinscripture.net/2016/12/28/jesus-birth-astronomical-zodiacal-references/
2 BC — June 17 (Joseph Freymann)
Uses the 11 Sep 3 BC Revelation 12 sign as the conception of Jesus. Points to the Jupiter-Venus conjunction 9 months later on 17 June 2 BC as the birth.
https://www.catholic.com/magazine/online-edition/a-modern-take-on-christs-birth-date

2 BC — August 27 (Roger Cunningham or The Ethical Skeptic)
Not a birth date necessarily, but a date for the New Star sign in the east to the Magi.
https://theethicalskeptic.com/2022/02/24/a-curious-ancient-astrological-confluence/

2 BC — September 29 (Chuck Missler)
https://www.khouse.org/personal_update/articles/2020/when-was-jesus-born
Fascinatingly, this date, though independent, is exactly 33 days after the Ethical Skeptic’s sign “in the east.” It also places John the Baptist’s birth around Passover.
1 BC — April 5 (John Pratt)
https://www.johnpratt.com/items/docs/2018/birth_of_christ.html

1 BC — April 6 (popular LDS interpretation of D&C 20:1)
The rise of the Church of Christ in these last days, being one thousand eight hundred and thirty years since the coming of our Lord and Savior Jesus Christ in the flesh, it being regularly organized and established agreeable to the laws of our country, by the will and commandments of God, in the fourth month, and on the sixth day of the month which is called April—
1 AD — March 25 (David Rosenvall)
https://achoiceland.com/pdf/Morning.pdf
1 AD — November 2 (screenshot)
DEATH
28 AD — March 21 (Jerry Grover)
30 AD — April 7 (The Urantia Book)
Combined with the Urantia Book’s birth date of 7 BC, this would make Jesus 36 years old at the time of the Crucifixion. This is interesting due to interesting things in the parallel life of Jachanan ben Kathryn during his 37th year (see BOBK 1:3).
33 AD — April 1 (John Pratt)
34 AD — March 24 (David Rosenvall)
INTERESTING ADDITIONS
Jerry Grover’s translation of the Caractors Document says the time between the voice of the Savior in the darkness and His final departure from the Nephites was a period of 50 weeks.
Grover’s same translation says that Samuel the Lamanite gave his 5-year prophecy 60.5 months before the coming of Christ.
I wonder if Jesus visited the Nephites during a 50-day superior conjunction, close to the winter solstice, when the Sun is in the head of the Cosmic Serpent.
The Possibility for Error in the Book of Mormon
The Nephites transitioned from a likely lunar calendar to a solar/Sothic/Haab one in the 9th year after the sign of Christ’s birth was given:
5 And also an hundred years had passed away since the days of Mosiah, who was king over the people of the Nephites. 6 And six hundred and nine years had passed away since Lehi left Jerusalem. 7 And nine years had passed away from the time when the sign was given, which was spoken of by the prophets, that Christ should come into the world. 8 Now the Nephites began to reckon their time from this period when the sign was given, or from the coming of Christ; therefore, nine years had passed away. (3 Nephi 2)
Transitioning calendars is a great way to make errors in calculations of time. Going from a 354-day year maintained for 100-609 years to a 365-day year could cause years to be lost, especially for a record keeper looking back. This may be why Mormon wrote the following about the sign of Christ’s death:
And now it came to pass that according to our record, and we know our record to be true, for behold, it was a just man who did keep the record—for he truly did many miracles in the name of Jesus; and there was not any man who could do a miracle in the name of Jesus save he were cleansed every whit from his iniquity—2 And now it came to pass, if there was no mistake made by this man in the reckoning of our time, the thirty and third year had passed away;… 5 And it came to pass in the thirty and fourth year, in the first month, on the fourth day of the month, there arose a great storm, such an one as never had been known in all the land. (3 Nephi 8)
Words*
A comment from this video makes a lot of sense considering the theory that John the Baptist was the reincarnation of Elijah. Didn’t the Jews expect Elijah to return during Passover? 6 months after Passover is right around the time of the Feast of Trumpets, the Day of Atonement, and the feast of Tabernacles.

Sources and Notes
The featured image for this page is the Beehive Cluster, Praesepe or “the manger”—which is where I and the ancient Sumerians think the throne of God is located—and was found here: https://astropixels.com/openclusters/M44-02.html