diff --git a/swh/graphql/app.py b/swh/graphql/app.py
--- a/swh/graphql/app.py
+++ b/swh/graphql/app.py
@@ -36,6 +36,7 @@
     resolvers.directory_entry_target,
     resolvers.search_result_target,
     resolvers.binary_string,
+    resolvers.date,
     scalars.id_scalar,
     scalars.datetime_scalar,
     scalars.swhid_scalar,
diff --git a/swh/graphql/resolvers/resolvers.py b/swh/graphql/resolvers/resolvers.py
--- a/swh/graphql/resolvers/resolvers.py
+++ b/swh/graphql/resolvers/resolvers.py
@@ -16,11 +16,15 @@
 #   Every scalar is expected to resolve this way
 # - As an attribute/item in the object/dict returned by a backend (eg: Origin.url)
 
+import datetime
+from typing import Optional, Union
+
 from ariadne import ObjectType, UnionType
 from graphql.type import GraphQLResolveInfo
 
 from swh.graphql import resolvers as rs
 from swh.graphql.utils import utils
+from swh.model.model import TimestampWithTimezone
 
 from .resolver_factory import get_connection_resolver, get_node_resolver
 
@@ -36,6 +40,7 @@
 directory_entry: ObjectType = ObjectType("DirectoryEntry")
 search_result: ObjectType = ObjectType("SearchResult")
 binary_string: ObjectType = ObjectType("BinaryString")
+date: ObjectType = ObjectType("Date")
 
 branch_target: UnionType = UnionType("BranchTarget")
 release_target: UnionType = UnionType("ReleaseTarget")
@@ -297,3 +302,33 @@
 @binary_string.field("base64")
 def binary_string_base64_resolver(obj, *args, **kw):
     return utils.get_b64_string(obj)
+
+
+@date.field("date")
+def date_info_date_resolver(
+    obj: Optional[Union[datetime.datetime, TimestampWithTimezone]],
+    *args: GraphQLResolveInfo,
+    **kw,
+) -> Optional[Union[datetime.datetime, TimestampWithTimezone]]:
+    if obj is not None:
+        # This will be serialised as a DateTime Scalar
+        return obj
+    return None
+
+
+@date.field("timestamp")
+def date_info_micro_seconds_resolver(
+    obj: Optional[TimestampWithTimezone], *args: GraphQLResolveInfo, **kw
+) -> Optional[float]:
+    if obj is not None:
+        return obj.timestamp.seconds + (obj.timestamp.microseconds / (10**6))
+    return None
+
+
+@date.field("offset")
+def date_info_offset_resolver(
+    obj: Optional[TimestampWithTimezone], *args: GraphQLResolveInfo, **kw
+) -> Optional[bytes]:
+    if obj is not None:
+        return obj.offset_bytes
+    return None
diff --git a/swh/graphql/resolvers/scalars.py b/swh/graphql/resolvers/scalars.py
--- a/swh/graphql/resolvers/scalars.py
+++ b/swh/graphql/resolvers/scalars.py
@@ -3,7 +3,8 @@
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
-from datetime import datetime
+import datetime
+from typing import Optional, Union
 
 from ariadne import ScalarType
 
@@ -28,13 +29,16 @@
 
 
 @datetime_scalar.serializer
-def serialize_datetime(value):
-    # FIXME, handle error and return None
-    if type(value) == TimestampWithTimezone:
-        value = value.to_datetime()
-    if type(value) == datetime:
-        return utils.get_formatted_date(value)
-    return None
+def serialize_datetime(
+    value: Optional[Union[datetime.datetime, TimestampWithTimezone]]
+) -> Optional[str]:
+    if isinstance(value, TimestampWithTimezone):
+        try:
+            value = value.to_datetime()
+        except ValueError:
+            # Return None in case of an error
+            pass
+    return utils.get_formatted_date(value) if type(value) == datetime.datetime else None
 
 
 @swhid_scalar.value_parser
diff --git a/swh/graphql/schema/schema.graphql b/swh/graphql/schema/schema.graphql
--- a/swh/graphql/schema/schema.graphql
+++ b/swh/graphql/schema/schema.graphql
@@ -522,6 +522,28 @@
   node: Revision
 }
 
+"""
+Object with Date information
+"""
+type Date {
+  """
+  ISO-8601 encoded date. This can be null in case of dates with extreme values,
+  but timestamp fields (timestamp and offset) could still contain the real values.
+  So, they are not guaranteed to agree with each other always.
+  """
+  date: DateTime
+
+  """
+  Seconds in the timestamp
+  """
+  timestamp: Float
+
+  """
+  UTC offset
+  """
+  offset: Int
+}
+
 """
 A revision object
 """
@@ -550,9 +572,9 @@
   committer: Person
 
   """
-  Revision date ISO-8601 encoded
+  Revision date
   """
-  date: DateTime
+  date: Date
 
   """
   Type of the revision, eg: git/hg
@@ -640,9 +662,9 @@
   author: Person
 
   """
-  Release date ISO-8601 encoded
+  Release date
   """
-  date: DateTime
+  date: Date
 
   """
   Type of release target
diff --git a/swh/graphql/tests/functional/test_release_node.py b/swh/graphql/tests/functional/test_release_node.py
--- a/swh/graphql/tests/functional/test_release_node.py
+++ b/swh/graphql/tests/functional/test_release_node.py
@@ -44,7 +44,9 @@
             text
           }
         }
-        date
+        date {
+          date
+        }
         targetType
       }
     }
@@ -67,7 +69,9 @@
         }
         if release.author
         else None,
-        "date": release.date.to_datetime().isoformat() if release.date else None,
+        "date": {"date": release.date.to_datetime().isoformat()}
+        if release.date
+        else None,
         "targetType": release.target_type.value,
     }
 
diff --git a/swh/graphql/tests/functional/test_revision.py b/swh/graphql/tests/functional/test_revision.py
--- a/swh/graphql/tests/functional/test_revision.py
+++ b/swh/graphql/tests/functional/test_revision.py
@@ -42,7 +42,11 @@
             text
           }
         }
-        date
+        date {
+          date
+          timestamp
+          offset
+        }
         type
         directory {
           swhid
@@ -51,6 +55,7 @@
     }
     """
     data, _ = utils.get_query_response(client, query_str % revision.swhid())
+
     assert data["revision"] == {
         "swhid": str(revision.swhid()),
         "message": {"text": revision.message.decode()},
@@ -64,7 +69,12 @@
             "name": {"text": revision.committer.name.decode()},
             "email": {"text": revision.committer.email.decode()},
         },
-        "date": revision.date.to_datetime().isoformat(),
+        "date": {
+            "date": revision.date.to_datetime().isoformat(),
+            "timestamp": revision.date.timestamp.seconds
+            + revision.date.timestamp.microseconds / (10**6),
+            "offset": int(revision.date.offset_bytes),
+        },
         "type": revision.type.value,
         "directory": {
             "swhid": str(CoreSWHID(object_id=revision.directory, object_type="dir"))
diff --git a/swh/graphql/tests/unit/resolvers/test_scalars.py b/swh/graphql/tests/unit/resolvers/test_scalars.py
new file mode 100644
--- /dev/null
+++ b/swh/graphql/tests/unit/resolvers/test_scalars.py
@@ -0,0 +1,35 @@
+# Copyright (C) 2022 The Software Heritage developers
+# See the AUTHORS file at the top-level directory of this distribution
+# License: GNU General Public License version 3, or any later version
+# See top-level LICENSE file for more information
+
+import datetime
+
+from swh.graphql.resolvers import scalars
+from swh.model.model import Timestamp, TimestampWithTimezone
+
+
+def test_serialize_datetime_from_datetime():
+    dt = datetime.datetime(2010, 1, 15, 2, 12, 10, 2, datetime.timezone.utc)
+    assert scalars.serialize_datetime(dt) == "2010-01-15T02:12:10.000002+00:00"
+
+
+def test_serialize_datetime_from_timestamp():
+    timestamp = Timestamp(seconds=-25444, microseconds=322322)
+    dt = TimestampWithTimezone.from_numeric_offset(
+        timestamp, offset=-264, negative_utc=True
+    )
+    assert scalars.serialize_datetime(dt) == "1969-12-31T12:31:56.322322-04:24"
+
+
+def test_serialize_datetime_from_too_big_timestamp():
+    # date is too large for the python datetime
+    timestamp = Timestamp(seconds=254443232223, microseconds=3)
+    dt = TimestampWithTimezone.from_numeric_offset(
+        timestamp, offset=-264, negative_utc=True
+    )
+    assert scalars.serialize_datetime(dt) is None
+
+
+def test_serialize_datetime_invalid_input():
+    assert scalars.serialize_datetime("test") is None