What year was the antichrist's mother born?

The antichrist wasn't born, and existed long before humans existed.

The Antichrist is not a ordinary person. That is part of the deception.

The Antichrist will be a supernatural being and will not have a mother.

I don't know when Biden's mother was born

Perhaps 20 or so years before 1938 AD

There isn't one antichrist, as you see in the movies.

1 John 2:18: “Young children, it is the last hour, and, just as you have heard that antichrist is coming, even now there have come to be many antichrists; from which fact we gain the knowledge that it is the last hour.”

2 John 7: “Many deceivers have gone forth into the world, persons not confessing Jesus Christ as coming in the flesh. This is the deceiver and the antichrist.” (Notice that the “many antichrists” of 1 John 2:18 are here referred to collectively as “the antichrist.”)

Is the coming of the antichrist reserved for some future time?

1 John 4:3: “Every inspired expression that does not confess Jesus does not originate with God. Furthermore, this is the antichrist’s inspired expression which you have heard was coming, and now it is already in the world.” (That was written near the end of the first century C.E.)

1 John 2:18: “Even now there have come to be many antichrists; from which fact we gain the knowledge that it is the last hour.” (By “last hour” John evidently meant the end of the apostolic period. The other apostles had died, and John himself was very old.)

Some of those identified as antichrist—

Persons who deny that Jesus is truly the Messiah

1 John 2:22: “Who is the liar if it is not the one that denies that Jesus is the Christ [or, Messiah, anointed one]? This is the antichrist.”

All who deny that Jesus is the unique Son of God

1 John 2:22: “This is the antichrist, the one that denies the Father and the Son.”

Passage please.

There is NO "the"  antichrist anywhere in scripture. 

The identity of the Antichrist won't be known until after the rapture.

42, it's the answer to everything.  :)

LOL, an anonymous coward asking foolish questions is upset.  I'm shocked!!  :D  :D