How VA state defines and values marital property. At the time of divorce day or at the time of seperation day and what define seperation day in VA ?

The courts in Virginia look at the value of marital property as of the date of the final divorce hearing.  However, a motion can be made to change the date of valuation to a different date for a variety of reasons.  The date of separation is determined by when the parties physically separated from one another - which generally means they moved in separate residences - with the intent of at least one of the parties that the separation would be permanent.  Then there cannot be any interruption to the separation or any further cohabitation during the statutory separation period (usually for one year, unless there are no minor children AND a written property settlement agreement, in which case it is six months), if the parties wish to seek a divorce.  No further documentation of the separation is needed, other than the testimony of one party and a corroborating third-party witness. This answer is given in accordance with the laws of Virginia and may not be applicable in any other state.  It should not be construed as legal advice, as that would require a more thorough analysis of all of the facts involved in a specific case.