Fix analog clock init timing

clock.js

@@ -87,7 +87,7 @@
     document.getElementById('handChronon').style.transform = `rotate(${cf * 360}deg)`;
   }
 
-  window.addEventListener('load', () => {
+  function initClock() {
     placeMarkers();
     updateClock();
     setInterval(updateClock, 1000);
@@ -97,5 +97,11 @@
         document.body.classList.toggle('fullscreen-clock');
       });
     }
-  });
+  }
+
+  if (document.readyState === 'loading') {
+    document.addEventListener('DOMContentLoaded', initClock);
+  } else {
+    initClock();
+  }
 })();