Earth's Four Seasons are Out of Sync

[Hannah.Taylor]

Interesting article suggests that Earth's four main seasons are out of sync.

But I wonder if that's really the case? Or could mankind's concept of time be off which might cause us to think the seasons are out of sync?

Earth's Seasons Are Out of Sync, Scientists Discover From Space

The annual clock of the seasons – winter, spring, summer, autumn – is often taken as a given.

www.sciencealert.com