U+336D "㍭" Ideographic Telegraph Symbol for Hour Twenty-One Unicode Character

U+336D "㍭" Ideographic Telegraph Symbol for Hour Twenty-One is a CJK Compatibility Ideograph that represents the time of day 21:00, or 9 PM, in a compact form used by old-style telegraph systems for transmitting dates and times in East Asia, specifically within a set of symbols encoding the hours from zero to twenty-four. This character, part of a block designed for compatibility with earlier encoding standards like JIS X 0213, combines the Chinese numeral for twenty-one with the character for hour, allowing for unambiguous communication in technical and telecommunication contexts. It is rarely used in modern digital text but remains a part of the Unicode standard to preserve historical data and legacy formats.