Quick answer
Do not apply one jurisdiction’s separation rule to another.
Do now
Identify the legal ground you plan to use. NJ irreconcilable differences involves a period of relationship breakdown; NY’s no-fault ground involves an irretrievable breakdown. Current DC guidance does not require a prefiling separation period. Ask whether your living arrangement affects the facts required for your chosen ground.
Watch for
A ground for divorce, a residency period, a response deadline, and time needed to finish the case are different things.
Official sources
NJ Courts — Divorce, NY Courts — Divorce frequently asked questions, DC Courts — Divorce, DC Code § 16-904 — Grounds for divorce and legal separation.
