prefix
to (a place); until (a time)
Prefix used in formal or written contexts to indicate a destination or a deadline. Often seen in signs, schedules, and official documents.
See also: 自
東京駅至新宿駅の切符を買った。
I bought a ticket from Tokyo Station to Shinjuku Station.
申し込みは3月31日至です。
Applications are until March 31st.