U+3358 "㍘" Ideographic Telegraph Symbol for Hour Zero Unicode Character
Unicode Version 17.0
㍘
U+3358 "㍘" Ideographic Telegraph Symbol for Hour Zero is a legacy symbol from the Japanese telegraph system used in the early 20th century to represent the hour 0 in a compact, standardized format for telegrams. It belongs to the CJK Compatibility block, which includes similar symbols for hours 0 through 23, each composed of the kanji for "hour" (時) combined with a numeric component. Specifically, "㍘" uses the character for zero (零) alongside the hour radical, allowing it to be easily transmitted and decoded in telegraphic communications. While it is rarely used in modern digital text, it remains a preserved artifact of historical encoding practices and is supported in Unicode for compatibility with older data.
General Properties
| Code Point | U+3358 |
| Version Added | 1.1 |
| Name | Ideographic Telegraph Symbol for Hour Zero |
| Block | CJK Compatibility |
| General Category | Other Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Compat |
| Decomposition Mapping | "0" U+0030 Digit Zero "点" U+70B9 CJK Unified Ideograph-# |
Encodings
| HTML Decimal Encoding | ㍘ |
| HTML Hex Encoding | ㍘ |
| UTF-8 Encoding | 0xE3 0x8D 0x98 |
| UTF-16 Encoding | 0x3358 |
| UTF-32 Encoding | 0x00003358 |
| C/C++/Java Escape | \u3358 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Ideographic |
| East Asian Width | Wide |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "0" U+0030 Digit Zero "点" U+70B9 CJK Unified Ideograph-# |
| NFKC Simple Casefold | "0" U+0030 Digit Zero "点" U+70B9 CJK Unified Ideograph-# |
| Script | Common |
| Script Extensions | Han |
| Indic Syllabic Category | Other |
| Vertical Orientation | Upright |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |