Tracks days spent in Maryland for the statutory residency test. You may be treated as a full-year resident if your domicile is outside Maryland but you maintain and occupy a place of abode in Maryland for more than six months of the tax year and are physically present in Maryland for 183 days or more. Day tracking alone cannot determine whether the place-of-abode requirement is met.
https://services.marylandcomptroller.gov/taxes/en/filing-information-for-individual-income-tax?id=kb_article_view&sysparm_article=KB0010130