Why can't we all just use UTC? The world had to change to a common calendar once, why not bite the bullet now and have everyone use the same time?

using System.Graphics.Drawing;

public Color IdealTextColor(Color bg)
{
        int nThreshold = 105;
        int bgDelta = Convert.ToInt32((bg.R * 0.299) + (bg.G * 0.587) + (bg.B * 0.114));
        Color foreColor = (255 - bgDelta nThreshold) ? Color.Black : Color.White;
        return foreColor;
}