LED Matrix Clock Operation 

 This Time Display is the default screen when first powered and also when there is nobody nearby.

setCursor() is used to reduce the width of the colon to fit the M in.

Single digits came left-justified, so a space was inserted before.

  This Day Display appears when a reflective surface, such a a hand approached to about a foot away

  This Date Display appears when a reflective surface, such a a hand approached to about 8” away.

For these two screens setCursor() is used to reduce the width of the space.