diff --git a/Include/internal/pycore_global_objects_fini_generated.h b/Include/internal/pycore_global_objects_fini_generated.h
index 99a1ffb8ad5229b..1cf766ddb382dd2 100644
--- a/Include/internal/pycore_global_objects_fini_generated.h
+++ b/Include/internal/pycore_global_objects_fini_generated.h
@@ -2153,6 +2153,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(updates));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(uri));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(usedforsecurity));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(utcoffset));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(value));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(values));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(version));
diff --git a/Include/internal/pycore_global_strings.h b/Include/internal/pycore_global_strings.h
index d5818402a508cb9..017d62e002fdff9 100644
--- a/Include/internal/pycore_global_strings.h
+++ b/Include/internal/pycore_global_strings.h
@@ -876,6 +876,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(updates)
         STRUCT_FOR_ID(uri)
         STRUCT_FOR_ID(usedforsecurity)
+        STRUCT_FOR_ID(utcoffset)
         STRUCT_FOR_ID(value)
         STRUCT_FOR_ID(values)
         STRUCT_FOR_ID(version)
diff --git a/Include/internal/pycore_runtime_init_generated.h b/Include/internal/pycore_runtime_init_generated.h
index 8227f3fa9eedcf5..75273243ef6df06 100644
--- a/Include/internal/pycore_runtime_init_generated.h
+++ b/Include/internal/pycore_runtime_init_generated.h
@@ -2151,6 +2151,7 @@ extern "C" {
     INIT_ID(updates), \
     INIT_ID(uri), \
     INIT_ID(usedforsecurity), \
+    INIT_ID(utcoffset), \
     INIT_ID(value), \
     INIT_ID(values), \
     INIT_ID(version), \
diff --git a/Include/internal/pycore_unicodeobject_generated.h b/Include/internal/pycore_unicodeobject_generated.h
index cb731e9a6888781..164d9d412ef5e95 100644
--- a/Include/internal/pycore_unicodeobject_generated.h
+++ b/Include/internal/pycore_unicodeobject_generated.h
@@ -3284,6 +3284,10 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
     assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_ID(utcoffset);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(value);
     _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
diff --git a/Modules/_datetimemodule.c b/Modules/_datetimemodule.c
index 59af7afcfcc644e..30317ea823ff7ee 100644
--- a/Modules/_datetimemodule.c
+++ b/Modules/_datetimemodule.c
@@ -1509,7 +1509,7 @@ get_tzinfo_member(PyObject *self)
  * this returns NULL.  Else result is returned.
  */
 static PyObject *
-call_tzinfo_method(PyObject *tzinfo, const char *name, PyObject *tzinfoarg)
+call_tzinfo_method(PyObject *tzinfo, PyObject *name, PyObject *tzinfoarg)
 {
     PyObject *offset;
 
@@ -1519,7 +1519,7 @@ call_tzinfo_method(PyObject *tzinfo, const char *name, PyObject *tzinfoarg)
 
     if (tzinfo == Py_None)
         Py_RETURN_NONE;
-    offset = PyObject_CallMethod(tzinfo, name, "O", tzinfoarg);
+    offset = PyObject_CallMethodOneArg(tzinfo, name, tzinfoarg);
     if (offset == Py_None || offset == NULL)
         return offset;
     if (PyDelta_Check(offset)) {
@@ -1536,7 +1536,7 @@ call_tzinfo_method(PyObject *tzinfo, const char *name, PyObject *tzinfoarg)
     }
     else {
         PyErr_Format(PyExc_TypeError,
-                     "tzinfo.%s() must return None or "
+                     "tzinfo.%U() must return None or "
                      "timedelta, not '%.200s'",
                      name, Py_TYPE(offset)->tp_name);
         Py_DECREF(offset);
@@ -1557,7 +1557,7 @@ call_tzinfo_method(PyObject *tzinfo, const char *name, PyObject *tzinfoarg)
 static PyObject *
 call_utcoffset(PyObject *tzinfo, PyObject *tzinfoarg)
 {
-    return call_tzinfo_method(tzinfo, "utcoffset", tzinfoarg);
+    return call_tzinfo_method(tzinfo, &_Py_ID(utcoffset), tzinfoarg);
 }
 
 /* Call tzinfo.dst(tzinfoarg), and extract an integer from the
@@ -1571,7 +1571,7 @@ call_utcoffset(PyObject *tzinfo, PyObject *tzinfoarg)
 static PyObject *
 call_dst(PyObject *tzinfo, PyObject *tzinfoarg)
 {
-    return call_tzinfo_method(tzinfo, "dst", tzinfoarg);
+    return call_tzinfo_method(tzinfo, &_Py_ID(dst), tzinfoarg);
 }
 
 /* Call tzinfo.tzname(tzinfoarg), and return the result.  tzinfo must be