From the BBC:

Imagine if you could see time laid out in front of you, or surrounding your body. And you could physically point to specific dates in space.

Important dates might stand out – birthdays, anniversaries. And you could scan a visible timeline – to check if you were available – whenever you made plans. No actual diary necessary.

Most people dont wish for any more mental anomolies than they already have, but I wouldn’t mind having synasthestia.  If anyone knows where I can pick some up…