Unfortunately, the original content of this site has been lost. Leettime was featured in a discussion on Stack Overflow. User CoderTao made the effort to come up with a proper implementation of the Leet Time.

Source: https://stackoverflow.com/a/1892624

Run of the mill, boring old clock
Leet Time (according to standard)
Leet Time (breaking standard, with seconds)
Leet Time (standard + deciseconds)
Leet Time (standard + centiseconds)
Leet Time (standard + milliseconds)
Leet Time (standard + milliseconds, proper)