diff --git a/graph.core.js b/graph.core.js
index 8757bb9..1e33513 100644
--- a/graph.core.js
+++ b/graph.core.js
@@ -162,6 +162,19 @@ const GraphLayoutApp = {
 				menu?.show_l3?.();
 			});
 		}
+		else {
+			// automatic refresh every 60s < interval < 1 day
+            var refresh = Math.min(Math.max(60, this.state.interval / 2), 86400);
+			var parent = this;
+			window.setInterval(function() {
+				if (parent.state.floatingtime) {
+					parent.onGraphTimeRefresh();
+				}
+				else {
+					parent.onReload();
+				}
+			}, refresh * 1000); // ms
+		}
 
 		this._onHashChange = this.onSavedHashChange.bind(this);
 		this._onColorModeChange = () => this.renderChart();