Six-hour clock may refer to:
*
Thai six-hour clock
The six-hour clock is a traditional timekeeping system used in the Thai and formerly the Lao language and the Khmer language, alongside the official 24-hour clock. Like other common systems, it counts twenty-four hours in a day, but divides the da ...
*
Italian six-hour clock
The six-hour clock ( it, sistema orario a sei ore), also called the Roman () or the Italian () system, is a system of date and time notation in Italy which was invented before the modern 24-hour clock. In this system, the day starts at the eveni ...
{{disambiguation