american english - When writing out month and year in words, is any punctuation necessary?

Trying to write out "August" and "two thousand eighteen" but unsure how to concatenate these two -- just a space, or is a comma needed?

A) August two thousand eighteen
----OR----
B) August, two thousand eighteen

The post found on Grammarly's blog here seems to suggest the former, but it also has the day in there, so I wasn't sure. Couldn't find any other info regarding this online, and all similar questions on here have numbers in the year instead of words.
Any help is appreciated!

EDIT: just to specify -- American English, not in a sentence at all (literally just the words "august two thousand eighteen", context is an informal publication, so I suppose (in hindsight) this is all more a stylistic choice than anything else.

Answer

Years should be written numerically (recommended by Chicago and APA guides). Assuming this is a special circumstance (wedding announcement is Google's top hit), you would use option A. Commas are only required in dates when numbers or weekdays are involved (e.g., "Sunday, January 4, 2018"). Additionally, if this is a formal announcement, the year is often given it's own line anyway, but that's a stylistic opinion.