The vernal equinox marks the start of spring in the Northern Hemisphere — so does that mean this is the only day out of the year when you’ll be able to balance an egg? Or not see your own shadow?

Spring is here — officially, at least. The vernal equinox arrived on Thursday, marking the start of the spring season for the Northern Hemisphere and the fall in the Southern Hemisphere.

Spring is here — officially, at least. The vernal equinox arrived on Thursday, marking the start of the spring season for the Northern Hemisphere and the fall in the Southern Hemisphere.

Spring is almost here — officially, at least. The vernal equinox arrives on Thursday, marking the start of the spring season for the Northern Hemisphere and the fall in the Southern Hemisphere.

The Northern Hemisphere’s spring — or vernal — equinox can land between March 19 and 21, depending on the year. Its fall – or autumnal — equinox can land between Sept. 21 and 24.

Spring is here — officially, at least. The vernal equinox arrived on Thursday, marking the start of the spring season for the Northern Hemisphere and the fall in the Southern Hemisphere.

Spring is here — officially, at least. The vernal equinox arrived on Thursday, marking the start of the spring season for the Northern Hemisphere and the fall in the Southern Hemisphere.

Spring is here — officially, at least. The vernal equinox arrived on Thursday, marking the start of the spring season for the Northern Hemisphere and the fall in the Southern Hemisphere.

Spring is here — officially, at least. The vernal equinox arrived on Thursday, marking the start of the spring season for the Northern Hemisphere and the fall in the Southern Hemisphere.

Spring is here — officially, at least. The vernal equinox arrived on Thursday, marking the start of the spring season for the Northern Hemisphere and the fall in the Southern Hemisphere.