It's April 1st! In America, this means a host of pranks, each funnier than the last. Why? Because April 1st is April Fools' Day. And doing this kind of thing is funny.
In Japan, it's a bit different. Today is a rather serious day, referred to as 'Watanuki'. Certain dates on the calendar have 'special' names, although they usually aren't used very often anymore. Anyways, on this day, new ventures are started, jobs are started, companies merge, and school starts. April 1st is the start of the new fiscal calendar in Japan, so this is an auspicious (and practical) day to begin a new business or economically-related undertaking! It isn't really a holiday, per se, but it is a day of big changes for stuff like that.
So, you want to start something new? Maybe take a superstitious route; purchase an amulet regarding the Shichifukujin (7 Gods of Fortune), or buy a maneki neko statue for your business!