None
For example, the LastItemModifiedDate property of a SPList is not local time, it is UTC. So just use the SPWeb object to convert it to local time.
DateTime myDT = mySPWeb.RegionalSettings.TimeZone.UTCToLocalTime(mySPList.LastItemModifiedDate)
PeterB
Monday, April 27, 2009 2:33 AM
Issue I had was someone used the "GetFormattedValue" function on the ListItem which returned the wrong time. Parsing the raw value DateTime.Parse(ListItem["Field].ToString) worked fine. The only time I needed to convert to local time was when I iterated through list item versions.