You are a common-law partner―either of the opposite sex or same sex―if:
you have been living together in a conjugal relationship for at least one year in a continuous 12-month period that was not interrupted. (You are allowed short absences for business travel or family reasons, however.)
You will need proof that you and your common-law partner have combined your affairs and set up a household together. This can be in the form of:
joint bank accounts or credit cards
joint ownership of a home
joint residential leases
joint rental receipts
joint utilities (electricity, gas, telephone)
joint management of household expenses
proof of joint purchases, especially for household items or
mail addressed to either person or both people at the same address.
上にもAT LEAST 1 YEARってありますよね?
365日を迎えた日から移民申請できるという意味じゃないと思います。
まあ資格があるかないかといえばあるでしょうが、最低でも1年以上、12ヶ月以上続いた結婚と同等生活が必要って書いてありますよね?普通は1年数ヶ月とかそれ以上をこなした上で申請するでしょう。