On March 20 the Earth's axis will be tilted neither towards nor away from the Sun, causing day and night to be nearly the exact same length all over the world. This is known as the spring equinox and officially marks the first day of spring, and gives rise to celebrations around the world.
The world-famous Mayan architectural relic lies on Mexico's Yucatán Peninsula. Such is the pyramid's geometric precision that during the spring equinox, the morning and afternoon sun produces a light-and-shadow illusion of a serpent ascending or descending the side of El Castillo's staircase.
The name marking the astrological start of spring is called the vernal equinox, which in Latin means 'equal night' (equi - equal, and nox - night). The new chapter of the seasons is marked by festivities all over the world.
Some events, like the equinox itself, relate to themes of nature such as cherry blossom observations, whereas others take on more religious meaning such as Easter, Holi and Passover. Whether you want to dive headfirst into a spiritual experience or are looking to gaze at spring's first blooms, you don't want to wait until next year to celebrate this one!