ODI and T20 Rule Changes

[viriya]

I'm looking to get specific dates when limited-over rule changes like powerplays and fielding restriction changes happened. Can anyone direct me to a source or give a tentative month/year?

For a project I'm working on right now, trying to iron out some quirks.

Much appreciated.

 

[viriya]

Anyone? Just the year of each change would be helpful.. I have an idea but need confirmation on the times.

 

[The Battlers Prince]

Are you meaning the changes to fielders in the circle at the start and end of matches? I think it's already in play

 

[Red]

Don't know Viriya. Doesn't seem easily accessible.

Should send it as an Ask Steven on cricinfo.