Code point
U+33F1
Glyph appearance depends on your fonts.
U+33F1
So<compat> 0031 0038 65E5U+33F1 IDEOGRAPHIC TELEGRAPH SYMBOL FOR DAY EIGHTEEN is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the CJK Compatibility block.
Choose the representation you need, then copy its value.
U+33F1
13297
㏱
㏱
E3 8F B1
33F1
000033F1
%E3%8F%B1
\u33F1
\u33F1
\u33F1
\33F1