diff --git a/changelog.d/18144.feature b/changelog.d/18144.feature
new file mode 100644
index 0000000000000000000000000000000000000000..74a28e5a4e8b34f800935b808046a28460460734
--- /dev/null
+++ b/changelog.d/18144.feature
@@ -0,0 +1 @@
+Add `get_current_time_msec()` method to the [module API](https://matrix-org.github.io/synapse/latest/modules/writing_a_module.html) for sound time comparisons with Synapse.
\ No newline at end of file
diff --git a/synapse/module_api/__init__.py b/synapse/module_api/__init__.py
index 2a2f821427d2d0521964d3910f99839caa81f4bb..bf9532e8917190a9e9ed8bf196d2f52900c1760c 100644
--- a/synapse/module_api/__init__.py
+++ b/synapse/module_api/__init__.py
@@ -1846,6 +1846,10 @@ class ModuleApi:
             deactivation=deactivation,
         )
 
+    def get_current_time_msec(self) -> int:
+        """Returns the current server time in milliseconds."""
+        return self._clock.time_msec()
+
 
 class PublicRoomListManager:
     """Contains methods for adding to, removing from and querying whether a room