diff --git a/pyproject.toml b/pyproject.toml
index 7af2982838a..76438e56bdd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -205,7 +205,7 @@ max-complexity = 33  # default is 10
 [tool.ruff.lint.pylint]
 max-args = 15  # default is 5
 max-branches = 28  # default is 12
-max-returns = 13  # default is 6
+max-returns = 14  # default is 6
 max-statements = 134  # default is 50
 
 ######################################################################################
diff --git a/src/pip/_internal/cli/cmdoptions.py b/src/pip/_internal/cli/cmdoptions.py
index a47f8a3f46a..3b9409ecd8b 100644
--- a/src/pip/_internal/cli/cmdoptions.py
+++ b/src/pip/_internal/cli/cmdoptions.py
@@ -10,6 +10,7 @@
 # The following comment should be removed at some point in the future.
 # mypy: strict-optional=False
 
+import datetime
 import importlib.util
 import logging
 import os
@@ -741,6 +742,34 @@ def _handle_no_cache_dir(
     help="Ignore the Requires-Python information.",
 )
 
+
+def _handle_upload_before(
+    option: Option, opt: str, value: str, parser: OptionParser
+) -> None:
+    """
+    Process a value provided for the --upload-before option.
+
+    This is an optparse.Option callback for the --upload-before option.
+    """
+    if value is None:
+        return None
+    upload_before = datetime.datetime.fromisoformat(value)
+    # Assume local timezone if no offset is given in the ISO string.
+    if upload_before.tzinfo is None:
+        upload_before = upload_before.astimezone()
+    parser.values.upload_before = upload_before
+
+
+upload_before: Callable[..., Option] = partial(
+    Option,
+    "--upload-before",
+    dest="upload_before",
+    metavar="datetime",
+    action="callback",
+    callback=_handle_upload_before,
+    help="Skip uploads after given time. This should be an ISO 8601 string.",
+)
+
 no_build_isolation: Callable[..., Option] = partial(
     Option,
     "--no-build-isolation",
diff --git a/src/pip/_internal/cli/req_command.py b/src/pip/_internal/cli/req_command.py
index 92900f94ff4..21c8b41bb80 100644
--- a/src/pip/_internal/cli/req_command.py
+++ b/src/pip/_internal/cli/req_command.py
@@ -5,6 +5,7 @@
 PackageFinder machinery and all its vendored dependencies, etc.
 """
 
+import datetime
 import logging
 from functools import partial
 from optparse import Values
@@ -306,6 +307,7 @@ def _build_package_finder(
         session: PipSession,
         target_python: Optional[TargetPython] = None,
         ignore_requires_python: Optional[bool] = None,
+        upload_before: Optional[datetime.datetime] = None,
     ) -> PackageFinder:
         """
         Create a package finder appropriate to this requirement command.
@@ -326,4 +328,5 @@ def _build_package_finder(
             link_collector=link_collector,
             selection_prefs=selection_prefs,
             target_python=target_python,
+            upload_before=upload_before,
         )
diff --git a/src/pip/_internal/commands/download.py b/src/pip/_internal/commands/download.py
index 917bbb91d83..c528dda33c8 100644
--- a/src/pip/_internal/commands/download.py
+++ b/src/pip/_internal/commands/download.py
@@ -52,6 +52,7 @@ def add_options(self) -> None:
         self.cmd_opts.add_option(cmdoptions.no_use_pep517())
         self.cmd_opts.add_option(cmdoptions.check_build_deps())
         self.cmd_opts.add_option(cmdoptions.ignore_requires_python())
+        self.cmd_opts.add_option(cmdoptions.upload_before())
 
         self.cmd_opts.add_option(
             "-d",
@@ -94,6 +95,7 @@ def run(self, options: Values, args: List[str]) -> int:
             session=session,
             target_python=target_python,
             ignore_requires_python=options.ignore_requires_python,
+            upload_before=options.upload_before,
         )
 
         build_tracker = self.enter_context(get_build_tracker())
diff --git a/src/pip/_internal/commands/index.py b/src/pip/_internal/commands/index.py
index 2e2661bba71..22bc362b4b3 100644
--- a/src/pip/_internal/commands/index.py
+++ b/src/pip/_internal/commands/index.py
@@ -1,3 +1,4 @@
+import datetime
 import logging
 from optparse import Values
 from typing import Any, Iterable, List, Optional
@@ -33,6 +34,7 @@ def add_options(self) -> None:
         cmdoptions.add_target_python_options(self.cmd_opts)
 
         self.cmd_opts.add_option(cmdoptions.ignore_requires_python())
+        self.cmd_opts.add_option(cmdoptions.upload_before())
         self.cmd_opts.add_option(cmdoptions.pre())
         self.cmd_opts.add_option(cmdoptions.no_binary())
         self.cmd_opts.add_option(cmdoptions.only_binary())
@@ -81,6 +83,7 @@ def _build_package_finder(
         session: PipSession,
         target_python: Optional[TargetPython] = None,
         ignore_requires_python: Optional[bool] = None,
+        upload_before: Optional[datetime.datetime] = None,
     ) -> PackageFinder:
         """
         Create a package finder appropriate to the index command.
@@ -98,6 +101,7 @@ def _build_package_finder(
             link_collector=link_collector,
             selection_prefs=selection_prefs,
             target_python=target_python,
+            upload_before=upload_before,
         )
 
     def get_available_package_versions(self, options: Values, args: List[Any]) -> None:
@@ -113,6 +117,7 @@ def get_available_package_versions(self, options: Values, args: List[Any]) -> No
                 session=session,
                 target_python=target_python,
                 ignore_requires_python=options.ignore_requires_python,
+                upload_before=options.upload_before,
             )
 
             versions: Iterable[Version] = (
diff --git a/src/pip/_internal/commands/install.py b/src/pip/_internal/commands/install.py
index d5b06c8c785..cd7fb7fbfd8 100644
--- a/src/pip/_internal/commands/install.py
+++ b/src/pip/_internal/commands/install.py
@@ -192,6 +192,7 @@ def add_options(self) -> None:
             ),
         )
 
+        self.cmd_opts.add_option(cmdoptions.upload_before())
         self.cmd_opts.add_option(cmdoptions.ignore_requires_python())
         self.cmd_opts.add_option(cmdoptions.no_build_isolation())
         self.cmd_opts.add_option(cmdoptions.use_pep517())
@@ -329,6 +330,7 @@ def run(self, options: Values, args: List[str]) -> int:
             session=session,
             target_python=target_python,
             ignore_requires_python=options.ignore_requires_python,
+            upload_before=options.upload_before,
         )
         build_tracker = self.enter_context(get_build_tracker())
 
diff --git a/src/pip/_internal/commands/list.py b/src/pip/_internal/commands/list.py
index 82fc46a118f..a14c740a735 100644
--- a/src/pip/_internal/commands/list.py
+++ b/src/pip/_internal/commands/list.py
@@ -139,7 +139,9 @@ def handle_pip_version_check(self, options: Values) -> None:
             super().handle_pip_version_check(options)
 
     def _build_package_finder(
-        self, options: Values, session: "PipSession"
+        self,
+        options: Values,
+        session: "PipSession",
     ) -> "PackageFinder":
         """
         Create a package finder appropriate to this list command.
diff --git a/src/pip/_internal/commands/wheel.py b/src/pip/_internal/commands/wheel.py
index 278719f4e0c..0b429aeeaa0 100644
--- a/src/pip/_internal/commands/wheel.py
+++ b/src/pip/_internal/commands/wheel.py
@@ -65,6 +65,7 @@ def add_options(self) -> None:
         self.cmd_opts.add_option(cmdoptions.requirements())
         self.cmd_opts.add_option(cmdoptions.src())
         self.cmd_opts.add_option(cmdoptions.ignore_requires_python())
+        self.cmd_opts.add_option(cmdoptions.upload_before())
         self.cmd_opts.add_option(cmdoptions.no_deps())
         self.cmd_opts.add_option(cmdoptions.progress_bar())
 
@@ -104,7 +105,11 @@ def add_options(self) -> None:
     def run(self, options: Values, args: List[str]) -> int:
         session = self.get_default_session(options)
 
-        finder = self._build_package_finder(options, session)
+        finder = self._build_package_finder(
+            options=options,
+            session=session,
+            upload_before=options.upload_before,
+        )
 
         options.wheel_dir = normalize_path(options.wheel_dir)
         ensure_dir(options.wheel_dir)
diff --git a/src/pip/_internal/index/package_finder.py b/src/pip/_internal/index/package_finder.py
index fb270f22f83..e0c434f6d5b 100644
--- a/src/pip/_internal/index/package_finder.py
+++ b/src/pip/_internal/index/package_finder.py
@@ -1,5 +1,6 @@
 """Routines related to PyPI, indexes"""
 
+import datetime
 import enum
 import functools
 import itertools
@@ -104,6 +105,7 @@ class LinkType(enum.Enum):
     format_invalid = enum.auto()
     platform_mismatch = enum.auto()
     requires_python_mismatch = enum.auto()
+    upload_too_late = enum.auto()
 
 
 class LinkEvaluator:
@@ -125,6 +127,7 @@ def __init__(
         target_python: TargetPython,
         allow_yanked: bool,
         ignore_requires_python: Optional[bool] = None,
+        upload_before: Optional[datetime.datetime] = None,
     ) -> None:
         """
         :param project_name: The user supplied package name.
@@ -142,6 +145,7 @@ def __init__(
         :param ignore_requires_python: Whether to ignore incompatible
             PEP 503 "data-requires-python" values in HTML links. Defaults
             to False.
+        :param upload_before: If set, only allow links prior to the given date.
         """
         if ignore_requires_python is None:
             ignore_requires_python = False
@@ -151,6 +155,7 @@ def __init__(
         self._ignore_requires_python = ignore_requires_python
         self._formats = formats
         self._target_python = target_python
+        self._upload_before = upload_before
 
         self.project_name = project_name
 
@@ -169,6 +174,11 @@ def evaluate_link(self, link: Link) -> Tuple[LinkType, str]:
             reason = link.yanked_reason or "<none given>"
             return (LinkType.yanked, f"yanked for reason: {reason}")
 
+        if link.upload_time is not None and self._upload_before is not None:
+            if link.upload_time > self._upload_before:
+                reason = f"Upload time {link.upload_time} after {self._upload_before}"
+                return (LinkType.upload_too_late, reason)
+
         if link.egg_fragment:
             egg_info = link.egg_fragment
             ext = link.ext
@@ -593,6 +603,7 @@ def __init__(
         format_control: Optional[FormatControl] = None,
         candidate_prefs: Optional[CandidatePreferences] = None,
         ignore_requires_python: Optional[bool] = None,
+        upload_before: Optional[datetime.datetime] = None,
     ) -> None:
         """
         This constructor is primarily meant to be used by the create() class
@@ -614,6 +625,7 @@ def __init__(
         self._ignore_requires_python = ignore_requires_python
         self._link_collector = link_collector
         self._target_python = target_python
+        self._upload_before = upload_before
 
         self.format_control = format_control
 
@@ -630,6 +642,7 @@ def create(
         link_collector: LinkCollector,
         selection_prefs: SelectionPreferences,
         target_python: Optional[TargetPython] = None,
+        upload_before: Optional[datetime.datetime] = None,
     ) -> "PackageFinder":
         """Create a PackageFinder.
 
@@ -638,6 +651,7 @@ def create(
         :param target_python: The target Python interpreter to use when
             checking compatibility. If None (the default), a TargetPython
             object will be constructed from the running Python.
+        :param upload_before: If set, only find links prior to the given date.
         """
         if target_python is None:
             target_python = TargetPython()
@@ -654,6 +668,7 @@ def create(
             allow_yanked=selection_prefs.allow_yanked,
             format_control=selection_prefs.format_control,
             ignore_requires_python=selection_prefs.ignore_requires_python,
+            upload_before=upload_before,
         )
 
     @property
@@ -714,6 +729,7 @@ def make_link_evaluator(self, project_name: str) -> LinkEvaluator:
             target_python=self._target_python,
             allow_yanked=self._allow_yanked,
             ignore_requires_python=self._ignore_requires_python,
+            upload_before=self._upload_before,
         )
 
     def _sort_links(self, links: Iterable[Link]) -> List[Link]:
diff --git a/src/pip/_internal/models/link.py b/src/pip/_internal/models/link.py
index 2f41f2f6a09..837271a599b 100644
--- a/src/pip/_internal/models/link.py
+++ b/src/pip/_internal/models/link.py
@@ -1,3 +1,4 @@
+import datetime
 import functools
 import itertools
 import logging
@@ -190,6 +191,7 @@ class Link:
         "requires_python",
         "yanked_reason",
         "metadata_file_data",
+        "upload_time",
         "cache_link_parsing",
         "egg_fragment",
     ]
@@ -201,6 +203,7 @@ def __init__(
         requires_python: Optional[str] = None,
         yanked_reason: Optional[str] = None,
         metadata_file_data: Optional[MetadataFile] = None,
+        upload_time: Optional[datetime.datetime] = None,
         cache_link_parsing: bool = True,
         hashes: Optional[Mapping[str, str]] = None,
     ) -> None:
@@ -222,6 +225,8 @@ def __init__(
             no such metadata is provided. This argument, if not None, indicates
             that a separate metadata file exists, and also optionally supplies
             hashes for that file.
+        :param upload_time: upload time of the file, or None if the information
+            is not available from the server.
         :param cache_link_parsing: A flag that is used elsewhere to determine
             whether resources retrieved from this link should be cached. PyPI
             URLs should generally have this set to False, for example.
@@ -253,6 +258,7 @@ def __init__(
         self.requires_python = requires_python if requires_python else None
         self.yanked_reason = yanked_reason
         self.metadata_file_data = metadata_file_data
+        self.upload_time = upload_time
 
         self.cache_link_parsing = cache_link_parsing
         self.egg_fragment = self._egg_fragment()
@@ -281,6 +287,12 @@ def from_json(
         if metadata_info is None:
             metadata_info = file_data.get("dist-info-metadata")
 
+        upload_time: Optional[datetime.datetime]
+        if upload_time_data := file_data.get("upload-time"):
+            upload_time = datetime.datetime.fromisoformat(upload_time_data)
+        else:
+            upload_time = None
+
         # The metadata info value may be a boolean, or a dict of hashes.
         if isinstance(metadata_info, dict):
             # The file exists, and hashes have been supplied
@@ -306,6 +318,7 @@ def from_json(
             yanked_reason=yanked_reason,
             hashes=hashes,
             metadata_file_data=metadata_file_data,
+            upload_time=upload_time,
         )
 
     @classmethod