What's the plural form of December solstice? Here's the word you're looking for.
Answer
The noun December solstice can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be December solstice.
However, in more specific contexts, the plural form can also be December solstices e.g. in reference to various types of December solstices
or a collection of December solstices.
