What is the angle of the noon day sun at 23.5 degrees south on March 21?

On March 21, which is the vernal equinox, the sun is directly overhead at the equator (0 degrees latitude). At 23.5 degrees south, the angle of the noon day sun would be 23.5 degrees above the horizon. This is because the sun's rays are hitting the Southern Hemisphere more directly as it moves northward during this time of year.