What year did David become king of Judah? Please, give reasons for your answer.

If you search "old testament timeline",enter different charts pop up but I noticed they are +/- a few years from chart to chart... https://biblehub.com/timeline/old.htm

I was going to say "about 1,000 B.C." and the timeline says 1010 BC. So we are close.

I have a personal timeline.

Exodus date of 2553 from creation or 1447 BC
From Exodus to 4th year of Solomon's reign 1 Kings 6:1 ----- 967 BC or 3033 years from creation
David ruled 7 years from Bethlehem and 33 from Jerusalem--total 40 years
Subtract 4 years from Solomon and 40 from David
I have the reign of David being------ 2989 to 3029 from creation or 1011 BC to 971 BC

I suppose everyone may be searching for that particular time frame for other reasons, mine was curiosity of when "Biblical Hebrew" first began to be written(about that time 1000-901bce) and so about the time David became king. https://en.wikipedia.org/wiki/Biblical_Hebrew Before that time(and was my reason for looking/research) was to understand what language Moses would have written(approx. 450 years prior).. Most likely it would have been proto sinaitic script or something similar that Moses used(IMO,lol) https://en.wikipedia.org/wiki/Proto-Sinaitic_script

I was pleased to see other christians doing a time study. In doing so you can easily see God's plan for humanity and how young the earth really is! Remember there was only 76 generations between Adam and the Lord.

I am curious, Why would you want to know, are you calculating a time frame to or for an event yet to come?

Cheers.

Thank you so much.