diff --git a/packages/frontend-misskey-world-engine/src/engine.ts b/packages/frontend-misskey-world-engine/src/engine.ts
index 35116a14e6..e12c089e5f 100644
--- a/packages/frontend-misskey-world-engine/src/engine.ts
+++ b/packages/frontend-misskey-world-engine/src/engine.ts
@@ -33,7 +33,7 @@ export class WorldEngine extends EngineBase<{
 	private envMap: BABYLON.CubeTexture;
 	public lightContainer: BABYLON.ClusteredLightContainer;
 	public sr: BABYLON.SnapshotRenderingHelper;
-	private gl: BABYLON.GlowLayer | null = null;
+	public gl: BABYLON.GlowLayer | null = null;
 	public timer: Timer = new Timer();
 	public isSitting = false;
 	private cameraHeight = cm(130);
@@ -80,23 +80,9 @@ export class WorldEngine extends EngineBase<{
 
 		this.sr = new BABYLON.SnapshotRenderingHelper(this.scene);
 
-		const skybox = BABYLON.MeshBuilder.CreateBox('skybox', { size: cm(50000) }, this.scene);
-		const skyboxMat = new BABYLON.StandardMaterial('skyboxMat', this.scene);
-		skyboxMat.backFaceCulling = false;
-		skyboxMat.disableLighting = true;
-		skybox.material = skyboxMat;
-		skybox.infiniteDistance = true;
-
 		this.time = TIME_MAP[new Date().getHours() as keyof typeof TIME_MAP];
 		//this.time = TIME_MAP[12 as keyof typeof TIME_MAP];
 
-		if (this.time === 0) {
-			skyboxMat.emissiveColor = new BABYLON.Color3(1, 1, 1);
-		} else if (this.time === 1) {
-			skyboxMat.emissiveColor = new BABYLON.Color3(0.7, 0.68, 0.66);
-		} else {
-			skyboxMat.emissiveColor = new BABYLON.Color3(0.48, 0.5, 0.6);
-		}
 		this.scene.ambientColor = new BABYLON.Color3(0.9, 0.9, 0.9);
 
 		this.envMap = BABYLON.CubeTexture.CreateFromPrefilteredData(this.time === 2 ? '/client-assets/room/outdoor-night.env' : '/client-assets/room/outdoor-day.env', this.scene);
@@ -143,7 +129,6 @@ export class WorldEngine extends EngineBase<{
 				blurKernelSize: 64,
 			});
 			this.gl.intensity = 0.5;
-			this.gl.addExcludedMesh(skybox);
 			this.scene.setRenderingAutoClearDepthStencil(this.gl.renderingGroupId, false);
 			this.sr.updateMeshesForEffectLayer(this.gl);
 		}
diff --git a/packages/frontend-misskey-world-engine/src/envs/lobby.ts b/packages/frontend-misskey-world-engine/src/envs/lobby.ts
index 08c301f693..a6c8c40602 100644
--- a/packages/frontend-misskey-world-engine/src/envs/lobby.ts
+++ b/packages/frontend-misskey-world-engine/src/envs/lobby.ts
@@ -38,7 +38,7 @@ export class LobbyEnvManager extends WorldEnvManager {
 		this.skyboxMat.disableLighting = true;
 		this.skybox.material = this.skyboxMat;
 		this.skybox.infiniteDistance = true;
-		this.engine.gl!.addExcludedMesh(this.skybox);
+		if (this.engine.gl != null) this.engine.gl.addExcludedMesh(this.skybox);
 
 		const ambientLight1 = new BABYLON.HemisphericLight('ambientLight1', new BABYLON.Vector3(0, 1, 0), this.engine.scene);
 		ambientLight1.diffuse = new BABYLON.Color3(1.0, 0.9, 0.8);
@@ -431,6 +431,22 @@ export class LobbyEnvManager extends WorldEnvManager {
 			});
 		}, 3000);
 
+		const hourHands = this.meshes.filter(m => m.name.includes('__CLOCK_HAND_H__'));
+		const minuteHands = this.meshes.filter(m => m.name.includes('__CLOCK_HAND_M__'));
+
+		this.timer.setInterval(() => {
+			const now = new Date();
+			const hours = now.getHours() % 12;
+			const minutes = now.getMinutes();
+			const hAngle = -(hours / 12) * Math.PI * 2 - (minutes / 60) * (Math.PI * 2 / 12);
+			const mAngle = -(minutes / 60) * Math.PI * 2;
+
+			for (const hourHand of hourHands) hourHand.rotation = new BABYLON.Vector3(0, 0, hAngle);
+			for (const minuteHand of minuteHands) minuteHand.rotation = new BABYLON.Vector3(0, 0, mAngle);
+
+			this.engine.sr.updateMesh([...hourHands, ...minuteHands], false);
+		}, 1000);
+
 		const emitter = new BABYLON.TransformNode('emitter', this.engine.scene);
 		emitter.position = new BABYLON.Vector3(0, cm(-1000), 0);
 		const ps = new BABYLON.ParticleSystem('', 128, this.engine.scene);
diff --git a/packages/frontend/assets/world/envs/lobby/lobby.blend b/packages/frontend/assets/world/envs/lobby/lobby.blend
index e73ac2ce4d..ae21726b77 100644
Binary files a/packages/frontend/assets/world/envs/lobby/lobby.blend and b/packages/frontend/assets/world/envs/lobby/lobby.blend differ
diff --git a/packages/frontend/assets/world/envs/lobby/lobby.glb b/packages/frontend/assets/world/envs/lobby/lobby.glb
index 021710588f..ea9d3e3bcd 100644
Binary files a/packages/frontend/assets/world/envs/lobby/lobby.glb and b/packages/frontend/assets/world/envs/lobby/lobby.glb differ