A world timepiece comprising clock means (3) for generating timing clock signals; data storage means (23) for storing data relating to the time differences of a plurality of regions of the world; and counting means (14-16) for counting the time of a predetermined one of said regions, characterised by correction storage means (17) for storing data concerning the correction amount by which a fundamental time is to be corrected and control means (20) for controlling the time correction of the said fundamental time so that the fundamental time is interlocked with the time of one of said regions when the said correction amount is shorter than a predetermined amount and is not interlocked therewith when the correction amount is greater than the said predetermined amount.