How much has Earth's day length changed over time?

[cap7]

I was reading a different thread that said that the length of days used to be shorter because the Earth's rotation was faster (because Earth's distance to the moon was shorter). If this is true, does anyone know if there is a chart that tells how long a day would have been 100 years ago, 500 years ago, 1000 years ago, 10000 years ago, 1000000 years ago - in comparison to how long a day is today with our current rotation speed? Please let me know.

 

[Ich]

Try http://hbar.phys.msu.ru/gorm/atext/steph2003.pdf" as a starting point. It's somewhere around 1.7 ms/cy, so 100000 years ago, the day way about 1.7 s longer.