PUNCHED PAPER TAPE
Time is displayed with digits which are encoded in one of the standard formats for punched paper tape from 1970's. First four rows counting from the bottom represent bits 0 to 3 of decimal numbers in binary code. Click the clock to control text display.

DOMINO
Numbers are represented by familiar patterns of dots. Click the clock if you want the time displayed numerically as well. You can choose either 12 or 24 hour display.
 
 

PUNCHED CARD
Digits are represented by punched holes in the numbered rows. The code punched in a card was printed on the top of the card. You can choose either 12 or 24 hour display.