Yeah I get what the map is, but isn’t really accurate to say they “skip labor day”, and there is also significance to why labor day is celebrated at other times of the year in other places, like the two examples I mentioned:
Several provinces in Canada had worker-organized labour movements that created their own labour day in September, so that is a culturally significant time for it to happen. And in Ireland, to say they’re skipping May Day when there is a public holiday is inaccurate, and also fails to take into account the cultural impact of the start of May already being a traditional festival.
It’s funny that America doesn’t celebrate it in May, but it is ultimately a bit US-centric to present the information in this manner when the date itself was chosen by the AFL to commemorate an American strike.
The map is also just wrong on several countries, like there’s no May Day in Liberia or Sierra Leone, Sudan, Mongolia, Oman, Papua New Guinea, Turkmenistan, Kazakhstan, Tajikistan, Azerbaijan. And a lot more countries only have partial holidays