Today is the Vernal Equinox, sometimes known as Ostara among Pagans, or, more often, simply as Spring Equinox.
It is a day for early planting, for celebrating new life. Eggs, bunnies, flowers, and bright colors are all associated with this day. In the Northeast, where I live, it is an excellent day for planting green peas, which are harvested in early summer, and for starting seedlings indoors to transplant in late May.
The Christian holiday of Easter bears a connection to this celebration, and so does the Jewish holiday of Purim (whose heroine is Esther, another Ostara/Oestre/Ishtar cognate).