Ostara is the pagan holiday celebrating the Spring Equinox.
Blessing from A Book of Pagan Prayer
The snow sinks back into the Earth,
there to nourish the sleeping life
that waits patiently for its time come.
Goddess of spring, you have performed this miracle through many ages.
Transform, again, the frozen white into the pliant green.
Work, again, the ancient magic,
and bring spring to our land.
Blessings on the holy day.