When I went to Google today to do the usual search (research?)– I saw Google decked out like this:
- and learnt it was to mark the first day of spring, or the spring equinox.
Google does this often – present its logo in fun forms to mark different occasions. Earlier ones this year included:
Alexander Graham Bell's Birthday - March 3, 2008
and Leap Year - February 29, 2008
Older ones can be found here