Nouns ending in a consonant followed by -y change the -y to -ies in the plural form.
January is regular. It follows the -ies Conversion rule.
Use plural verbs: "The januaries are ready" (not "is ready").
Yes. The plural januaries is standard across all English variants.
The word january follows the standard English pluralization rule. When forming the plural, january becomes januaries. This follows the -ies Conversion pattern, which is one of the most common plural rules in English.
Understanding why january becomes januaries helps with spelling and pronunciation. Nouns ending in a consonant followed by -y change the -y to -ies in the plural form.
When using januaries in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The januaries are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.