The word for today is April.
In our hemisphere, April is the month when plants start to grow. The Latin word – APERIRE – means to open, to uncover what lay hidden. Mensem aperire was a Latin phrase used to indicate the opening month. The calendar was changed many times, but when January became the first month replacing April, the news did not reach remote areas. Villagers in outlying districts who still used April as the first month of the year were called fools. More precisely, they were know as April Fools.