Python 3, 62 bytes

lambda n:sum(b>>5<=b%32+23-n/5<=7for b in b'\xa0cfhjlnP24')+1

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Python 3, 62 60 bytes

lambda d:sum(b//25<=b%25+23-d/5<=7for b in b'BUNSWYQ+-}')+1

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There's an invisible (on Stack Exchange) \x18 character at the end of the string.

Python 3.8, 62 bytes

lambda n:sum(b>>5<=b%32+23-n/5<=7for b in b'\xa0cfhjlnP24')+1

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Python 3, 62 bytes

lambda n:sum(b>>5<=b%32+23-n/5<=7for b in b'\xa0cfhjlnP24')+1

Try it online!

There's an invisible (on Stack Exchange) \x18 character at the end of the string.