When part of a nickname, _The Crescent City_, _the Buckeye State_, _the City of Brotherly Love_.
Be careful not to capitalize such words when they are not an actual part of the name.

_French Republic_ is the name of the county, exactly translating _Republique Francaise_, but _American republic_ is not such a name.

You would write _State of New York_ in a legal document in which the state would be considered as a corporate person, but in ordinary references it would be _state of New York_.
17.

The days of the week and the months of the year, but not the seasons unless personified.
_Monday the fifth of August._ _April is the first month of spring._ _Spring, beautiful Spring._ But write _ten o'clock_, _nine a.m._, _ten p.m._ 18.

Festivals and historic or famous days.
_Easter Day_ _Fast Day_ _Independence Day_ _Black Friday_.
19.