What is Spring?
Spring begins, by the astronomers’ calendar, on the March equinox, when day and night are about the same length all over the world. From then on, in the northern hemisphere, the days are longer than the nights.
When is Spring?
The March equinox falls on the 19th, 20th or 21st of March, at a moment that moves a few hours every year. The countdown is to that day, in the northern hemisphere; south of the equator it is the start of autumn.
Ways to mark the day
- Plant something: seeds on the windowsill are enough.
- Clean out a cupboard, the spring cleaning tradition.
- Go out at sunset on the day and notice how late it is.
How the countdown works
The date is worked out for every year, so the clock always counts down to the next one. It counts on your own device’s time and reaches zero at midnight where you are. Full screen puts it on a classroom board or a big screen, and Your own event counts down to a date of your own instead.