Weather: Today is the Equilux, but what does that mean?

Today is the equilux.

This is the point when day and night are exactly equal. From today our days will be longer than the nights - a welcome relief after the winter.

It happens a few days before the spring equinox, and a few days after the autumn equinox.

It is all down to how the Sun's light reaches us - refracted from the Earth's atmosphere adding a few minutes of extra daylight.

Monday marks the spring equinox- the point the sun ends up exactly above the equator between the Northern and Southern Hemisphere.

The spring equinox marks the beginning of the astronomical spring.