Badly educated event organisers and media outlets will tell you about the “Start of Spring” this week, but don’t fall for that! Together with your primary school teachers they are just badly educated. ;-) Met Eireann points out year after year that Spring starts in Ireland on 01 March and NOT on 01 February. But the misinformation is is persistent. Met Eireann is using the meteorological start of spring and that is definitely not in February but in March as you can read here.
In the rest of Europe, Spring starts – based on the astronomical calendar – even later, on 21 March. Only Ireland is different in whole Europe and how did that happen? Well, the “mistake” in Ireland goes back to the ancient celts, who ignored meteorology and astronomy and had a completely different way of looking at things. The year for example started on 01 November and the day started and ended at sunset. So they were not really wrong, but they used different definitions.
If your day still starts at sunset and your year starts on 01 November, then it’s perfectly fine to start Spring on 01 February in your world. But if you have modernised your views and start your year on 01 January and start the day at midnight, then it is time to update your view of the seasons as well! ;-)