While many people rely on a groundhog to let them know when spring will arrive, folks in Boston know warmer days are ahead thanks to Red Sox "Truck Day." It may have snowed overnight in Boston, but Monday marked the unofficial start of Spring Training.

Truck Day is one of those “only in Boston” photo ops, much like Allston Christmas, the L Street Brownies swimming in the ocean on New Year’s, and U-Hauls getting “Storrowed.”

The Boston Red Sox celebrated Truck Day on Monday, marking the unofficial start of spring training. The equipment truck was loaded with baseball equipment and supplies starting at 7 a.m. The equipment truck was loaded with baseball equipment and supplies starting at 7 a.