Source: Noto CJK

U+33D8 Square Pm

U+33D8 was added to Unicode in version 1.1 (1993). It belongs to the block U+3300 to U+33FF CJK Compatibility in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Other Symbol and is commonly used, that is, in no specific script.

The glyph is a Square composition of the glyphs Latin Small Letter P, Full Stop, Latin Small Letter M, Full Stop. It has a Wide East Asian Width. In bidirectional context it acts as Left To Right and is not mirrored. In text U+33D8 behaves as Ideographic regarding line breaks. It has type Other for sentence and Other for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

The 12-hour clock is a time convention in which the 24 hours of the day are divided into two periods: a.m. (from Latin ante meridiem, translating to "before midday") and p.m. (from Latin post meridiem, translating to "after midday"). Each period consists of 12 hours numbered: 12 (acting as 0), 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11.
The daily cycle starts at 12 midnight, runs through 12 noon, and continues until just before midnight at the end of the day. There is no widely accepted convention for how midday and midnight should be represented. The 12-hour clock was developed from the second millennium BC and reached its modern form in the 16th century AD.
The 12-hour time convention is common in several English-speaking nations and former British colonies, as well as a few other countries.

Representations

System	Representation
Nº	13272
UTF-8	E3 8F 98
UTF-16	33 D8
UTF-32	00 00 33 D8
URL-Quoted	%E3%8F%98
HTML hex reference	㏘
Wrong windows-1252 Mojibake	ã˜
Encoding: EUC-KR (hex bytes)	A2 E4
Adobe Glyph List	pmsquare

Elsewhere

Complete Record

Property	Value
Age	1.1 (1993)
Unicode Name	SQUARE PM
Unicode 1 Name	SQUARED PM
Block	CJK Compatibility
General Category	Other Symbol
Script	Common
Bidirectional Category	Left To Right
Combining Class	Not Reordered
Decomposition Type	Square
Decomposition Mapping	Latin Small Letter P Full Stop Latin Small Letter M Full Stop
Lowercase	✘
Simple Lowercase Mapping	Square Pm
Lowercase Mapping	Square Pm
Uppercase	✘
Simple Uppercase Mapping	Square Pm
Uppercase Mapping	Square Pm
Simple Titlecase Mapping	Square Pm
Titlecase Mapping	Square Pm
Case Folding	Square Pm
ASCII Hex Digit	✘
Alphabetic	✘
Bidi Control	✘
Bidi Mirrored	✘
Composition Exclusion	✘
Case Ignorable	✘
Changes When Casefolded	✘
Changes When Casemapped	✘
Changes When NFKC Casefolded	✔
Changes When Lowercased	✘
Changes When Titlecased	✘
Changes When Uppercased	✘
Cased	✘
Full Composition Exclusion	✘
Default Ignorable Code Point	✘
Dash	✘
Deprecated	✘
Diacritic	✘
Emoji Modifier Base	✘
Emoji Component	✘
Emoji Modifier	✘
Emoji Presentation	✘
Emoji	✘
Extender	✘
Extended Pictographic	✘
FC NFKC Closure	Square Pm
Grapheme Cluster Break	Any
Grapheme Base	✔
Grapheme Extend	✘
Grapheme Link	✘
Hex Digit	✘
Hyphen	✘
ID Continue	✘
ID Start	✘
IDS Binary Operator	✘
IDS Trinary Operator and	✘
Ideographic	✘
Indic Mantra Category	—
Indic Positional Category	NA
Indic Syllabic Category	Other
Jamo Short Name	—
Join Control	✘
Logical Order Exception	✘
Math	✘
Noncharacter Code Point	✘
NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Casefold	Latin Small Letter P Full Stop Latin Small Letter M Full Stop
NFKC Quick Check	No
NFKD Quick Check	No
Other Alphabetic	✘
Other Default Ignorable Code Point	✘
Other Grapheme Extend	✘
Other ID Continue	✘
Other ID Start	✘
Other Lowercase	✘
Other Math	✘
Other Uppercase	✘
Prepended Concatenation Mark	✘
Pattern Syntax	✘
Pattern White Space	✘
Quotation Mark	✘
Regional Indicator	✘
Radical	✘
Sentence Break	Other
Soft Dotted	✘
Sentence Terminal	✘
Terminal Punctuation	✘
Unified Ideograph	✘
Variation Selector	✘
Word Break	Other
White Space	✘
XID Continue	✘
XID Start	✘
Expands On NFC	✘
Expands On NFD	✘
Expands On NFKC	✔
Expands On NFKD	✔
Bidi Paired Bracket	Square Pm
Bidi Paired Bracket Type	None
East Asian Width	Wide
Hangul Syllable Type	Not Applicable
ISO 10646 Comment	—
Joining Group	No_Joining_Group
Joining Type	Non Joining
Line Break	Ideographic
Numeric Type	None
Numeric Value	not a number
Simple Case Folding	Square Pm
Script Extension
Vertical Orientation	U