void GetMonthRangeInUtc(DateTime aDate, out DateTime utcMonthStart, out DateTime utcNextMonthStart)
{
    // compute the first day of the month containing aDate and successive months   
    DateTime[] monthStart = new DateTime[2];    
    for (int i = 0; i < monthStart.Length; i++)
    {
        monthStart[i] = new DateTime(aDate.Year, aDate.Month++, 1);
    }
 
    // Compute the offset from UTC to our local time (UTC + offset = localtime).
    TimeSpan utcOffset = TimeZone.CurrentTimeZone.GetUtcOffset(aDate);
 
    // convert local times to UTC (UTC = localtime - offset)
    utcMonthStart = monthStart[0].Subtract(utcOffset);
    utcNextMonthStart = monthStart[1].Subtract(utcOffset);   
}

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1february 14 2010