LightimeTM is a “high-tech”, high profile lighting system which crowns the summit of Central Plaza. It indicates the time by changing colour(s) in a regular sequence, synchronized to the Hong Kong Observatory clock.

How it indicates the time:
It consists of four (spandrel) neon bands, each representing 15 minutes, that change colour on the quarter hour, progressing through the hour, according to a fixed six-hour colour cycle.