diff --git a/Makefile.pre.in b/Makefile.pre.in
index 5826b9a82736b9..7b67738f4341a2 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -2800,6 +2800,7 @@ MODULE__SHA3_DEPS=$(srcdir)/Modules/hashlib.h $(LIBHACL_HEADERS) Modules/_hacl/H
 MODULE__SOCKET_DEPS=$(srcdir)/Modules/socketmodule.h $(srcdir)/Modules/addrinfo.h $(srcdir)/Modules/getaddrinfo.c $(srcdir)/Modules/getnameinfo.c
 MODULE__SSL_DEPS=$(srcdir)/Modules/_ssl.h $(srcdir)/Modules/_ssl/cert.c $(srcdir)/Modules/_ssl/debughelpers.c $(srcdir)/Modules/_ssl/misc.c $(srcdir)/Modules/_ssl_data.h $(srcdir)/Modules/_ssl_data_111.h $(srcdir)/Modules/_ssl_data_300.h $(srcdir)/Modules/socketmodule.h
 MODULE__TESTCAPI_DEPS=$(srcdir)/Modules/_testcapi/testcapi_long.h $(srcdir)/Modules/_testcapi/parts.h $(srcdir)/Modules/_testcapi/util.h
+MODULE__TESTINTERNALCAPI_DEPS=$(srcdir)/Modules/_testinternalcapi/parts.h
 MODULE__SQLITE3_DEPS=$(srcdir)/Modules/_sqlite/connection.h $(srcdir)/Modules/_sqlite/cursor.h $(srcdir)/Modules/_sqlite/microprotocols.h $(srcdir)/Modules/_sqlite/module.h $(srcdir)/Modules/_sqlite/prepare_protocol.h $(srcdir)/Modules/_sqlite/row.h $(srcdir)/Modules/_sqlite/util.h
 
 CODECS_COMMON_HEADERS=$(srcdir)/Modules/cjkcodecs/multibytecodec.h $(srcdir)/Modules/cjkcodecs/cjkcodecs.h
diff --git a/Modules/Setup.stdlib.in b/Modules/Setup.stdlib.in
index 2bb39d2936894a..56c1badf6b44a0 100644
--- a/Modules/Setup.stdlib.in
+++ b/Modules/Setup.stdlib.in
@@ -158,7 +158,7 @@
 @MODULE_XXSUBTYPE_TRUE@xxsubtype xxsubtype.c
 @MODULE__XXTESTFUZZ_TRUE@_xxtestfuzz _xxtestfuzz/_xxtestfuzz.c _xxtestfuzz/fuzzer.c
 @MODULE__TESTBUFFER_TRUE@_testbuffer _testbuffer.c
-@MODULE__TESTINTERNALCAPI_TRUE@_testinternalcapi _testinternalcapi.c
+@MODULE__TESTINTERNALCAPI_TRUE@_testinternalcapi _testinternalcapi.c _testinternalcapi/pytime.c
 @MODULE__TESTCAPI_TRUE@_testcapi _testcapimodule.c _testcapi/vectorcall.c _testcapi/vectorcall_limited.c _testcapi/heaptype.c _testcapi/abstract.c _testcapi/unicode.c _testcapi/dict.c _testcapi/getargs.c _testcapi/datetime.c _testcapi/docstring.c _testcapi/mem.c _testcapi/watchers.c _testcapi/long.c _testcapi/float.c _testcapi/structmember.c _testcapi/exceptions.c _testcapi/code.c _testcapi/buffer.c _testcapi/pyatomic.c _testcapi/pyos.c _testcapi/immortal.c _testcapi/heaptype_relative.c _testcapi/gc.c
 @MODULE__TESTCLINIC_TRUE@_testclinic _testclinic.c
 @MODULE__TESTCLINIC_LIMITED_TRUE@_testclinic_limited _testclinic_limited.c
diff --git a/Modules/_testcapi/pytime.c b/Modules/_testcapi/pytime.c
deleted file mode 100644
index e69de29bb2d1d6..00000000000000
diff --git a/Modules/_testinternalcapi.c b/Modules/_testinternalcapi.c
index e375ca8556d217..96d568294a9710 100644
--- a/Modules/_testinternalcapi.c
+++ b/Modules/_testinternalcapi.c
@@ -33,9 +33,8 @@
 
 #include "clinic/_testinternalcapi.c.h"
 
-#ifdef MS_WINDOWS
-#  include <winsock2.h>          // struct timeval
-#endif
+// Include test definitions from _testinternalcapi/
+#include "_testinternalcapi/parts.h"
 
 
 #define MODULE_NAME "_testinternalcapi"
@@ -1123,250 +1122,6 @@ pending_identify(PyObject *self, PyObject *args)
     return res;
 }
 
-
-static PyObject *
-test_pytime_fromseconds(PyObject *self, PyObject *args)
-{
-    int seconds;
-    if (!PyArg_ParseTuple(args, "i", &seconds)) {
-        return NULL;
-    }
-    _PyTime_t ts = _PyTime_FromSeconds(seconds);
-    return _PyTime_AsNanosecondsObject(ts);
-}
-
-static int
-check_time_rounding(int round)
-{
-    if (round != _PyTime_ROUND_FLOOR
-        && round != _PyTime_ROUND_CEILING
-        && round != _PyTime_ROUND_HALF_EVEN
-        && round != _PyTime_ROUND_UP)
-    {
-        PyErr_SetString(PyExc_ValueError, "invalid rounding");
-        return -1;
-    }
-    return 0;
-}
-
-static PyObject *
-test_pytime_fromsecondsobject(PyObject *self, PyObject *args)
-{
-    PyObject *obj;
-    int round;
-    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
-        return NULL;
-    }
-    if (check_time_rounding(round) < 0) {
-        return NULL;
-    }
-    _PyTime_t ts;
-    if (_PyTime_FromSecondsObject(&ts, obj, round) == -1) {
-        return NULL;
-    }
-    return _PyTime_AsNanosecondsObject(ts);
-}
-
-static PyObject *
-test_pytime_assecondsdouble(PyObject *self, PyObject *args)
-{
-    PyObject *obj;
-    if (!PyArg_ParseTuple(args, "O", &obj)) {
-        return NULL;
-    }
-    _PyTime_t ts;
-    if (_PyTime_FromNanosecondsObject(&ts, obj) < 0) {
-        return NULL;
-    }
-    double d = _PyTime_AsSecondsDouble(ts);
-    return PyFloat_FromDouble(d);
-}
-
-static PyObject *
-test_PyTime_AsTimeval(PyObject *self, PyObject *args)
-{
-    PyObject *obj;
-    int round;
-    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
-        return NULL;
-    }
-    if (check_time_rounding(round) < 0) {
-        return NULL;
-    }
-    _PyTime_t t;
-    if (_PyTime_FromNanosecondsObject(&t, obj) < 0) {
-        return NULL;
-    }
-    struct timeval tv;
-    if (_PyTime_AsTimeval(t, &tv, round) < 0) {
-        return NULL;
-    }
-
-    PyObject *seconds = PyLong_FromLongLong(tv.tv_sec);
-    if (seconds == NULL) {
-        return NULL;
-    }
-    return Py_BuildValue("Nl", seconds, (long)tv.tv_usec);
-}
-
-static PyObject *
-test_PyTime_AsTimeval_clamp(PyObject *self, PyObject *args)
-{
-    PyObject *obj;
-    int round;
-    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
-        return NULL;
-    }
-    if (check_time_rounding(round) < 0) {
-        return NULL;
-    }
-    _PyTime_t t;
-    if (_PyTime_FromNanosecondsObject(&t, obj) < 0) {
-        return NULL;
-    }
-    struct timeval tv;
-    _PyTime_AsTimeval_clamp(t, &tv, round);
-
-    PyObject *seconds = PyLong_FromLongLong(tv.tv_sec);
-    if (seconds == NULL) {
-        return NULL;
-    }
-    return Py_BuildValue("Nl", seconds, (long)tv.tv_usec);
-}
-
-#ifdef HAVE_CLOCK_GETTIME
-static PyObject *
-test_PyTime_AsTimespec(PyObject *self, PyObject *args)
-{
-    PyObject *obj;
-    if (!PyArg_ParseTuple(args, "O", &obj)) {
-        return NULL;
-    }
-    _PyTime_t t;
-    if (_PyTime_FromNanosecondsObject(&t, obj) < 0) {
-        return NULL;
-    }
-    struct timespec ts;
-    if (_PyTime_AsTimespec(t, &ts) == -1) {
-        return NULL;
-    }
-    return Py_BuildValue("Nl", _PyLong_FromTime_t(ts.tv_sec), ts.tv_nsec);
-}
-
-static PyObject *
-test_PyTime_AsTimespec_clamp(PyObject *self, PyObject *args)
-{
-    PyObject *obj;
-    if (!PyArg_ParseTuple(args, "O", &obj)) {
-        return NULL;
-    }
-    _PyTime_t t;
-    if (_PyTime_FromNanosecondsObject(&t, obj) < 0) {
-        return NULL;
-    }
-    struct timespec ts;
-    _PyTime_AsTimespec_clamp(t, &ts);
-    return Py_BuildValue("Nl", _PyLong_FromTime_t(ts.tv_sec), ts.tv_nsec);
-}
-#endif
-
-static PyObject *
-test_PyTime_AsMilliseconds(PyObject *self, PyObject *args)
-{
-    PyObject *obj;
-    int round;
-    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
-        return NULL;
-    }
-    _PyTime_t t;
-    if (_PyTime_FromNanosecondsObject(&t, obj) < 0) {
-        return NULL;
-    }
-    if (check_time_rounding(round) < 0) {
-        return NULL;
-    }
-    _PyTime_t ms = _PyTime_AsMilliseconds(t, round);
-    _PyTime_t ns = _PyTime_FromNanoseconds(ms);
-    return _PyTime_AsNanosecondsObject(ns);
-}
-
-static PyObject *
-test_PyTime_AsMicroseconds(PyObject *self, PyObject *args)
-{
-    PyObject *obj;
-    int round;
-    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
-        return NULL;
-    }
-    _PyTime_t t;
-    if (_PyTime_FromNanosecondsObject(&t, obj) < 0) {
-        return NULL;
-    }
-    if (check_time_rounding(round) < 0) {
-        return NULL;
-    }
-    _PyTime_t us = _PyTime_AsMicroseconds(t, round);
-    _PyTime_t ns = _PyTime_FromNanoseconds(us);
-    return _PyTime_AsNanosecondsObject(ns);
-}
-
-static PyObject *
-test_pytime_object_to_time_t(PyObject *self, PyObject *args)
-{
-    PyObject *obj;
-    time_t sec;
-    int round;
-    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
-        return NULL;
-    }
-    if (check_time_rounding(round) < 0) {
-        return NULL;
-    }
-    if (_PyTime_ObjectToTime_t(obj, &sec, round) == -1) {
-        return NULL;
-    }
-    return _PyLong_FromTime_t(sec);
-}
-
-static PyObject *
-test_pytime_object_to_timeval(PyObject *self, PyObject *args)
-{
-    PyObject *obj;
-    time_t sec;
-    long usec;
-    int round;
-    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
-        return NULL;
-    }
-    if (check_time_rounding(round) < 0) {
-        return NULL;
-    }
-    if (_PyTime_ObjectToTimeval(obj, &sec, &usec, round) == -1) {
-        return NULL;
-    }
-    return Py_BuildValue("Nl", _PyLong_FromTime_t(sec), usec);
-}
-
-static PyObject *
-test_pytime_object_to_timespec(PyObject *self, PyObject *args)
-{
-    PyObject *obj;
-    time_t sec;
-    long nsec;
-    int round;
-    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
-        return NULL;
-    }
-    if (check_time_rounding(round) < 0) {
-        return NULL;
-    }
-    if (_PyTime_ObjectToTimespec(obj, &sec, &nsec, round) == -1) {
-        return NULL;
-    }
-    return Py_BuildValue("Nl", _PyLong_FromTime_t(sec), nsec);
-}
-
-
 static PyObject *
 tracemalloc_get_traceback(PyObject *self, PyObject *args)
 {
@@ -1731,20 +1486,6 @@ static PyMethodDef module_functions[] = {
     {"pending_threadfunc", _PyCFunction_CAST(pending_threadfunc),
      METH_VARARGS | METH_KEYWORDS},
     {"pending_identify", pending_identify, METH_VARARGS, NULL},
-    {"_PyTime_AsMicroseconds",    test_PyTime_AsMicroseconds,     METH_VARARGS},
-    {"_PyTime_AsMilliseconds",    test_PyTime_AsMilliseconds,     METH_VARARGS},
-    {"_PyTime_AsSecondsDouble",   test_pytime_assecondsdouble,    METH_VARARGS},
-#ifdef HAVE_CLOCK_GETTIME
-    {"_PyTime_AsTimespec",        test_PyTime_AsTimespec,         METH_VARARGS},
-    {"_PyTime_AsTimespec_clamp",  test_PyTime_AsTimespec_clamp,   METH_VARARGS},
-#endif
-    {"_PyTime_AsTimeval",         test_PyTime_AsTimeval,          METH_VARARGS},
-    {"_PyTime_AsTimeval_clamp",   test_PyTime_AsTimeval_clamp,    METH_VARARGS},
-    {"_PyTime_FromSeconds",       test_pytime_fromseconds,        METH_VARARGS},
-    {"_PyTime_FromSecondsObject", test_pytime_fromsecondsobject,  METH_VARARGS},
-    {"_PyTime_ObjectToTime_t",    test_pytime_object_to_time_t,   METH_VARARGS},
-    {"_PyTime_ObjectToTimespec",  test_pytime_object_to_timespec, METH_VARARGS},
-    {"_PyTime_ObjectToTimeval",   test_pytime_object_to_timeval,  METH_VARARGS},
     {"_PyTraceMalloc_GetTraceback", tracemalloc_get_traceback, METH_VARARGS},
     {"test_tstate_capi", test_tstate_capi, METH_NOARGS, NULL},
     {"_PyUnicode_TransformDecimalAndSpaceToASCII", unicode_transformdecimalandspacetoascii, METH_O},
@@ -1771,6 +1512,10 @@ static PyMethodDef module_functions[] = {
 static int
 module_exec(PyObject *module)
 {
+    if (_PyTestInternalCapi_Init_PyTime(module) < 0) {
+        return 1;
+    }
+
     if (PyModule_Add(module, "SIZEOF_PYGC_HEAD",
                         PyLong_FromSsize_t(sizeof(PyGC_Head))) < 0) {
         return 1;
diff --git a/Modules/_testinternalcapi/README.txt b/Modules/_testinternalcapi/README.txt
new file mode 100644
index 00000000000000..eb071135e4c592
--- /dev/null
+++ b/Modules/_testinternalcapi/README.txt
@@ -0,0 +1,5 @@
+Tests in this directory are compiled into the _testinternalcapi extension.
+The main file for the extension is Modules/_testinternalcapimodule.c, which
+calls `_PyTestInternalCapi_Init_*` from these functions.
+
+See Modules/_testcapi/README.txt for guideline when writing C test code.
\ No newline at end of file
diff --git a/Modules/_testinternalcapi/parts.h b/Modules/_testinternalcapi/parts.h
new file mode 100644
index 00000000000000..43e7714b235156
--- /dev/null
+++ b/Modules/_testinternalcapi/parts.h
@@ -0,0 +1,15 @@
+#ifndef Py_TESTINTERNALCAPI_PARTS_H
+#define Py_TESTINTERNALCAPI_PARTS_H
+
+// Always enable assertions
+#undef NDEBUG
+
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
+#include "Python.h"
+
+int _PyTestInternalCapi_Init_PyTime(PyObject *module);
+
+#endif // Py_TESTINTERNALCAPI_PARTS_H
diff --git a/Modules/_testinternalcapi/pytime.c b/Modules/_testinternalcapi/pytime.c
new file mode 100644
index 00000000000000..2b5f9eb0ef2851
--- /dev/null
+++ b/Modules/_testinternalcapi/pytime.c
@@ -0,0 +1,279 @@
+/* Test pycore_time.h */
+
+#include "parts.h"
+
+#include "pycore_time.h"
+
+#ifdef MS_WINDOWS
+#  include <winsock2.h>          // struct timeval
+#endif
+
+
+static PyObject *
+test_pytime_fromseconds(PyObject *self, PyObject *args)
+{
+    int seconds;
+    if (!PyArg_ParseTuple(args, "i", &seconds)) {
+        return NULL;
+    }
+    _PyTime_t ts = _PyTime_FromSeconds(seconds);
+    return _PyTime_AsNanosecondsObject(ts);
+}
+
+static int
+check_time_rounding(int round)
+{
+    if (round != _PyTime_ROUND_FLOOR
+        && round != _PyTime_ROUND_CEILING
+        && round != _PyTime_ROUND_HALF_EVEN
+        && round != _PyTime_ROUND_UP)
+    {
+        PyErr_SetString(PyExc_ValueError, "invalid rounding");
+        return -1;
+    }
+    return 0;
+}
+
+static PyObject *
+test_pytime_fromsecondsobject(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    int round;
+    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
+        return NULL;
+    }
+    if (check_time_rounding(round) < 0) {
+        return NULL;
+    }
+    _PyTime_t ts;
+    if (_PyTime_FromSecondsObject(&ts, obj, round) == -1) {
+        return NULL;
+    }
+    return _PyTime_AsNanosecondsObject(ts);
+}
+
+static PyObject *
+test_pytime_assecondsdouble(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    if (!PyArg_ParseTuple(args, "O", &obj)) {
+        return NULL;
+    }
+    _PyTime_t ts;
+    if (_PyTime_FromNanosecondsObject(&ts, obj) < 0) {
+        return NULL;
+    }
+    double d = _PyTime_AsSecondsDouble(ts);
+    return PyFloat_FromDouble(d);
+}
+
+static PyObject *
+test_PyTime_AsTimeval(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    int round;
+    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
+        return NULL;
+    }
+    if (check_time_rounding(round) < 0) {
+        return NULL;
+    }
+    _PyTime_t t;
+    if (_PyTime_FromNanosecondsObject(&t, obj) < 0) {
+        return NULL;
+    }
+    struct timeval tv;
+    if (_PyTime_AsTimeval(t, &tv, round) < 0) {
+        return NULL;
+    }
+
+    PyObject *seconds = PyLong_FromLongLong(tv.tv_sec);
+    if (seconds == NULL) {
+        return NULL;
+    }
+    return Py_BuildValue("Nl", seconds, (long)tv.tv_usec);
+}
+
+static PyObject *
+test_PyTime_AsTimeval_clamp(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    int round;
+    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
+        return NULL;
+    }
+    if (check_time_rounding(round) < 0) {
+        return NULL;
+    }
+    _PyTime_t t;
+    if (_PyTime_FromNanosecondsObject(&t, obj) < 0) {
+        return NULL;
+    }
+    struct timeval tv;
+    _PyTime_AsTimeval_clamp(t, &tv, round);
+
+    PyObject *seconds = PyLong_FromLongLong(tv.tv_sec);
+    if (seconds == NULL) {
+        return NULL;
+    }
+    return Py_BuildValue("Nl", seconds, (long)tv.tv_usec);
+}
+
+#ifdef HAVE_CLOCK_GETTIME
+static PyObject *
+test_PyTime_AsTimespec(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    if (!PyArg_ParseTuple(args, "O", &obj)) {
+        return NULL;
+    }
+    _PyTime_t t;
+    if (_PyTime_FromNanosecondsObject(&t, obj) < 0) {
+        return NULL;
+    }
+    struct timespec ts;
+    if (_PyTime_AsTimespec(t, &ts) == -1) {
+        return NULL;
+    }
+    return Py_BuildValue("Nl", _PyLong_FromTime_t(ts.tv_sec), ts.tv_nsec);
+}
+
+static PyObject *
+test_PyTime_AsTimespec_clamp(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    if (!PyArg_ParseTuple(args, "O", &obj)) {
+        return NULL;
+    }
+    _PyTime_t t;
+    if (_PyTime_FromNanosecondsObject(&t, obj) < 0) {
+        return NULL;
+    }
+    struct timespec ts;
+    _PyTime_AsTimespec_clamp(t, &ts);
+    return Py_BuildValue("Nl", _PyLong_FromTime_t(ts.tv_sec), ts.tv_nsec);
+}
+#endif
+
+static PyObject *
+test_PyTime_AsMilliseconds(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    int round;
+    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
+        return NULL;
+    }
+    _PyTime_t t;
+    if (_PyTime_FromNanosecondsObject(&t, obj) < 0) {
+        return NULL;
+    }
+    if (check_time_rounding(round) < 0) {
+        return NULL;
+    }
+    _PyTime_t ms = _PyTime_AsMilliseconds(t, round);
+    _PyTime_t ns = _PyTime_FromNanoseconds(ms);
+    return _PyTime_AsNanosecondsObject(ns);
+}
+
+static PyObject *
+test_PyTime_AsMicroseconds(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    int round;
+    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
+        return NULL;
+    }
+    _PyTime_t t;
+    if (_PyTime_FromNanosecondsObject(&t, obj) < 0) {
+        return NULL;
+    }
+    if (check_time_rounding(round) < 0) {
+        return NULL;
+    }
+    _PyTime_t us = _PyTime_AsMicroseconds(t, round);
+    _PyTime_t ns = _PyTime_FromNanoseconds(us);
+    return _PyTime_AsNanosecondsObject(ns);
+}
+
+static PyObject *
+test_pytime_object_to_time_t(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    time_t sec;
+    int round;
+    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
+        return NULL;
+    }
+    if (check_time_rounding(round) < 0) {
+        return NULL;
+    }
+    if (_PyTime_ObjectToTime_t(obj, &sec, round) == -1) {
+        return NULL;
+    }
+    return _PyLong_FromTime_t(sec);
+}
+
+static PyObject *
+test_pytime_object_to_timeval(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    time_t sec;
+    long usec;
+    int round;
+    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
+        return NULL;
+    }
+    if (check_time_rounding(round) < 0) {
+        return NULL;
+    }
+    if (_PyTime_ObjectToTimeval(obj, &sec, &usec, round) == -1) {
+        return NULL;
+    }
+    return Py_BuildValue("Nl", _PyLong_FromTime_t(sec), usec);
+}
+
+static PyObject *
+test_pytime_object_to_timespec(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    time_t sec;
+    long nsec;
+    int round;
+    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
+        return NULL;
+    }
+    if (check_time_rounding(round) < 0) {
+        return NULL;
+    }
+    if (_PyTime_ObjectToTimespec(obj, &sec, &nsec, round) == -1) {
+        return NULL;
+    }
+    return Py_BuildValue("Nl", _PyLong_FromTime_t(sec), nsec);
+}
+
+static PyMethodDef TestMethods[] = {
+    {"_PyTime_AsMicroseconds",    test_PyTime_AsMicroseconds,     METH_VARARGS},
+    {"_PyTime_AsMilliseconds",    test_PyTime_AsMilliseconds,     METH_VARARGS},
+    {"_PyTime_AsSecondsDouble",   test_pytime_assecondsdouble,    METH_VARARGS},
+#ifdef HAVE_CLOCK_GETTIME
+    {"_PyTime_AsTimespec",        test_PyTime_AsTimespec,         METH_VARARGS},
+    {"_PyTime_AsTimespec_clamp",  test_PyTime_AsTimespec_clamp,   METH_VARARGS},
+#endif
+    {"_PyTime_AsTimeval",         test_PyTime_AsTimeval,          METH_VARARGS},
+    {"_PyTime_AsTimeval_clamp",   test_PyTime_AsTimeval_clamp,    METH_VARARGS},
+    {"_PyTime_FromSeconds",       test_pytime_fromseconds,        METH_VARARGS},
+    {"_PyTime_FromSecondsObject", test_pytime_fromsecondsobject,  METH_VARARGS},
+    {"_PyTime_ObjectToTime_t",    test_pytime_object_to_time_t,   METH_VARARGS},
+    {"_PyTime_ObjectToTimespec",  test_pytime_object_to_timespec, METH_VARARGS},
+    {"_PyTime_ObjectToTimeval",   test_pytime_object_to_timeval,  METH_VARARGS},
+    {NULL, NULL} /* sentinel */
+};
+
+int
+_PyTestInternalCapi_Init_PyTime(PyObject *m)
+{
+    if (PyModule_AddFunctions(m, TestMethods) < 0) {
+        return -1;
+    }
+    return 0;
+}
diff --git a/PCbuild/_testinternalcapi.vcxproj b/PCbuild/_testinternalcapi.vcxproj
index 6c5b12cd40e983..59491c644b6655 100644
--- a/PCbuild/_testinternalcapi.vcxproj
+++ b/PCbuild/_testinternalcapi.vcxproj
@@ -94,6 +94,7 @@
   </PropertyGroup>
   <ItemGroup>
     <ClCompile Include="..\Modules\_testinternalcapi.c" />
+    <ClCompile Include="..\Modules\_testinternalcapi\pytime.c" />
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="..\PC\python_nt.rc" />
diff --git a/PCbuild/_testinternalcapi.vcxproj.filters b/PCbuild/_testinternalcapi.vcxproj.filters
index 7734da0b7b426b..21a66a2aa79f76 100644
--- a/PCbuild/_testinternalcapi.vcxproj.filters
+++ b/PCbuild/_testinternalcapi.vcxproj.filters
@@ -12,6 +12,9 @@
     <ClCompile Include="..\Modules\_testinternalcapi.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\Modules\_testinternalcapi\pytime.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="..\PC\python_nt.rc">
diff --git a/configure b/configure
index 7fe4aead29a732..983b1edf4a86e1 100755
--- a/configure
+++ b/configure
@@ -26553,6 +26553,7 @@ SRCDIRS="\
   Modules/_sqlite \
   Modules/_sre \
   Modules/_testcapi \
+  Modules/_testinternalcapi \
   Modules/_xxtestfuzz \
   Modules/cjkcodecs \
   Modules/expat \
diff --git a/configure.ac b/configure.ac
index 5673b374353b47..10f132faa9d80d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6470,6 +6470,7 @@ SRCDIRS="\
   Modules/_sqlite \
   Modules/_sre \
   Modules/_testcapi \
+  Modules/_testinternalcapi \
   Modules/_xxtestfuzz \
   Modules/cjkcodecs \
   Modules/expat \