diff --git a/src/lib/utils/clock.cpp b/src/lib/utils/clock.cpp
index 60bb27f0..1befe810 100755
--- a/src/lib/utils/clock.cpp
+++ b/src/lib/utils/clock.cpp
@@ -44,4 +44,10 @@ void clockGettime(struct timespec* t) {
 #endif
 }
 
+long long clockGetMillis() {
+  struct timespec t;
+  clockGettime(&t);
+  return t.tv_sec*1000LL + t.tv_nsec / 1000000;
+}
+
 }  // namespace ebusd
diff --git a/src/lib/utils/clock.h b/src/lib/utils/clock.h
index 6d2f75ed..7f046433 100755
--- a/src/lib/utils/clock.h
+++ b/src/lib/utils/clock.h
@@ -31,6 +31,11 @@ namespace ebusd {
  */
 void clockGettime(struct timespec* t);
 
+/**
+ * Get the current system time in milliseconds since the Epoch.
+ */
+long long clockGetMillis();
+
 }  // namespace ebusd
 
 #endif  // LIB_UTILS_CLOCK_H_