diff --git a/application/views/bandmap/list.php b/application/views/bandmap/list.php
index 938c4f0cd..9ce18b5ce 100644
--- a/application/views/bandmap/list.php
+++ b/application/views/bandmap/list.php
@@ -91,6 +91,7 @@
 	// DX Map translation strings
 	var lang_bandmap_draw_spotters = "<?= __("Draw Spotters"); ?>";
 	var lang_bandmap_extend_map = "<?= __("Extend Map"); ?>";
+	var lang_bandmap_show_daynight = "<?= __("Show Day/Night"); ?>";
 	var lang_bandmap_your_qth = "<?= __("Your QTH"); ?>";
 	var lang_bandmap_callsign = "<?= __("Callsign"); ?>";
 	var lang_bandmap_frequency = "<?= __("Frequency"); ?>";
diff --git a/application/views/interface_assets/footer.php b/application/views/interface_assets/footer.php
index 472bbf6d5..d0fb2da6e 100644
--- a/application/views/interface_assets/footer.php
+++ b/application/views/interface_assets/footer.php
@@ -1468,6 +1468,7 @@ mymap.on('mousemove', onQsoMapMove);
 	<script type="text/javascript" src="<?php echo base_url(); ?>assets/js/cat.js?v=<?php echo time(); ?>"></script>
 	<script type="text/javascript" src="<?php echo base_url(); ?>assets/js/leaflet/leaflet.geodesic.js?v=<?php echo time(); ?>"></script>
 	<script type="text/javascript" src="<?php echo base_url(); ?>assets/js/leaflet.polylineDecorator.js?v=<?php echo time(); ?>"></script>
+	<script type="text/javascript" src="<?php echo base_url(); ?>assets/js/leaflet/L.Terminator.js?v=<?php echo time(); ?>"></script>
 	<script type="text/javascript" src="<?php echo base_url(); ?>assets/js/sections/bandmap_list.js?v=<?php echo time(); ?>"></script>
 <?php } ?>
 
diff --git a/assets/js/sections/bandmap_list.js b/assets/js/sections/bandmap_list.js
index 5fd7a6d39..499de2c28 100644
--- a/assets/js/sections/bandmap_list.js
+++ b/assets/js/sections/bandmap_list.js
@@ -3434,6 +3434,8 @@ $(function() {
 	let connectionLines = [];
 	let userHomeMarker = null;
 	let showSpotters = false;
+	let showDayNight = true; // Day/Night terminator enabled by default
+	let terminatorLayer = null; // Store terminator layer reference
 	let hoverSpottersData = new Map(); // Store spotter data for hover
 	let hoverSpotterMarkers = []; // Temporary markers shown on hover
 	let hoverConnectionLines = []; // Temporary lines shown on hover
@@ -3471,6 +3473,9 @@ $(function() {
 
 		addUserHomeMarker();
 		addSpottersControl();
+		
+		// Initialize terminator (enabled by default)
+		updateTerminator();
 	}
 
 	/**
@@ -3509,6 +3514,7 @@ $(function() {
 			const div = L.DomUtil.create("div", "legend");
 			div.innerHTML = '<input type="checkbox" id="toggleSpotters" style="outline: none;"><span> ' + lang_bandmap_draw_spotters + '</span><br>';
 			div.innerHTML += '<input type="checkbox" id="extendMapCheckbox" style="outline: none;"><span> ' + lang_bandmap_extend_map + '</span><br>';
+			div.innerHTML += '<input type="checkbox" id="showDayNightCheckbox" checked style="outline: none;"><span> ' + lang_bandmap_show_daynight + '</span><br>';
 			return div;
 		};
 		legend.addTo(dxMap);
@@ -3533,9 +3539,37 @@ $(function() {
 					dxMap.invalidateSize();
 				}
 			});
+
+			$('#showDayNightCheckbox').on('change', function() {
+				showDayNight = this.checked;
+				updateTerminator();
+			});
 		}, 100);
 	}
 
+	/**
+	 * Update day/night terminator layer
+	 */
+	function updateTerminator() {
+		if (!dxMap) return;
+
+		// Remove existing terminator layer if it exists
+		if (terminatorLayer) {
+			dxMap.removeLayer(terminatorLayer);
+			terminatorLayer = null;
+		}
+
+		// Add new terminator layer if enabled
+		if (showDayNight) {
+			terminatorLayer = L.terminator({
+				fillOpacity: 0.3,
+				color: '#000',
+				weight: 1
+			});
+			terminatorLayer.addTo(dxMap);
+		}
+	}
+
 	/**
 	 * Group spots by DXCC entity
 	 */
@@ -4263,6 +4297,9 @@ $(function() {
 			dxMap.fitBounds(bounds, { padding: [50, 50], maxZoom: 8 });
 		}
 
+		// Update day/night terminator
+		updateTerminator();
+
 		setTimeout(() => {
 			if (dxMap) dxMap.invalidateSize();
 		}, 100);