Limit a date's resolution. For example, the date
1095767411000(which represents 2004-09-21 13:50:11) will be changed to
1093989600000(2004-09-01 00:00:00) when using
Resolution.MONTH.
the date with all values more precise than
resolutionset to 0 or 1, expressed as milliseconds since January 1, 1970, 00:00:00 GMT
DateTools Class | Lucene.Net.Documents Namespace | DateTools.Round Overload List