diff --git a/stdlib/calendar.pyi b/stdlib/calendar.pyi
index 255a12d33..3f881393e 100644
--- a/stdlib/calendar.pyi
+++ b/stdlib/calendar.pyi
@@ -1,4 +1,5 @@
 import datetime
+import enum
 import sys
 from _typeshed import Unused
 from collections.abc import Iterable, Sequence
@@ -35,6 +36,23 @@ __all__ = [
 
 if sys.version_info >= (3, 10):
     __all__ += ["FRIDAY", "MONDAY", "SATURDAY", "SUNDAY", "THURSDAY", "TUESDAY", "WEDNESDAY"]
+if sys.version_info >= (3, 12):
+    __all__ += [
+        "Day",
+        "Month",
+        "JANUARY",
+        "FEBRUARY",
+        "MARCH",
+        "APRIL",
+        "MAY",
+        "JUNE",
+        "JULY",
+        "AUGUST",
+        "SEPTEMBER",
+        "OCTOBER",
+        "NOVEMBER",
+        "DECEMBER",
+    ]
 
 _LocaleType: TypeAlias = tuple[str | None, str | None]
 
@@ -134,12 +152,55 @@ day_abbr: Sequence[str]
 month_name: Sequence[str]
 month_abbr: Sequence[str]
 
-MONDAY: Literal[0]
-TUESDAY: Literal[1]
-WEDNESDAY: Literal[2]
-THURSDAY: Literal[3]
-FRIDAY: Literal[4]
-SATURDAY: Literal[5]
-SUNDAY: Literal[6]
+if sys.version_info >= (3, 12):
+    class Month(enum.IntEnum):
+        JANUARY: Literal[1]
+        FEBRUARY: Literal[2]
+        MARCH: Literal[3]
+        APRIL: Literal[4]
+        MAY: Literal[5]
+        JUNE: Literal[6]
+        JULY: Literal[7]
+        AUGUST: Literal[8]
+        SEPTEMBER: Literal[9]
+        OCTOBER: Literal[10]
+        NOVEMBER: Literal[11]
+        DECEMBER: Literal[12]
+    JANUARY = Month.JANUARY
+    FEBRUARY = Month.FEBRUARY
+    MARCH = Month.MARCH
+    APRIL = Month.APRIL
+    MAY = Month.MAY
+    JUNE = Month.JUNE
+    JULY = Month.JULY
+    AUGUST = Month.AUGUST
+    SEPTEMBER = Month.SEPTEMBER
+    OCTOBER = Month.OCTOBER
+    NOVEMBER = Month.NOVEMBER
+    DECEMBER = Month.DECEMBER
+
+    class Day(enum.IntEnum):
+        MONDAY: Literal[0]
+        TUESDAY: Literal[1]
+        WEDNESDAY: Literal[2]
+        THURSDAY: Literal[3]
+        FRIDAY: Literal[4]
+        SATURDAY: Literal[5]
+        SUNDAY: Literal[6]
+    MONDAY = Day.MONDAY
+    TUESDAY = Day.TUESDAY
+    WEDNESDAY = Day.WEDNESDAY
+    THURSDAY = Day.THURSDAY
+    FRIDAY = Day.FRIDAY
+    SATURDAY = Day.SATURDAY
+    SUNDAY = Day.SUNDAY
+else:
+    MONDAY: Literal[0]
+    TUESDAY: Literal[1]
+    WEDNESDAY: Literal[2]
+    THURSDAY: Literal[3]
+    FRIDAY: Literal[4]
+    SATURDAY: Literal[5]
+    SUNDAY: Literal[6]
 
 EPOCH: Literal[1970]
diff --git a/tests/stubtest_allowlists/py312.txt b/tests/stubtest_allowlists/py312.txt
index 7aa61c3a8..03c8cd9d7 100644
--- a/tests/stubtest_allowlists/py312.txt
+++ b/tests/stubtest_allowlists/py312.txt
@@ -19,21 +19,6 @@ asyncio.tasks.Task.get_context
 asyncio.tasks.__all__
 asyncio.tasks.create_eager_task_factory
 asyncio.tasks.eager_task_factory
-calendar.APRIL
-calendar.AUGUST
-calendar.DECEMBER
-calendar.Day
-calendar.FEBRUARY
-calendar.JANUARY
-calendar.JULY
-calendar.JUNE
-calendar.MARCH
-calendar.MAY
-calendar.Month
-calendar.NOVEMBER
-calendar.OCTOBER
-calendar.SEPTEMBER
-calendar.__all__
 collections.UserDict.get
 configparser.ParsingError.__init__
 configparser.RawConfigParser.readfp