@BKeyport said in Not updating at midnight...:
start: function () {
function scheduleMidnightUpdate() {
const now = new Date();
const nextMidnight = new Date(now);
    // Set the time to midnight
    nextMidnight.setHours(24, 0, 0, 0);
    // Calculate the time remaining until the next midnight
    const timeUntilMidnight = nextMidnight - now;
    // Schedule the updateDom method to be called at midnight
    setTimeout(() => {
        this.updateDom();
        // Reschedule the update for the next midnight
        scheduleMidnightUpdate.call(this);
    }, timeUntilMidnight);
}
},
I would do it like this , much more straight forward
     function scheduleMidnightUpdate() {
         const now = new Date();
         const nextMidnight = new Date(now);
 
         // Set the time to midnight
         nextMidnight.setHours(24, 0, 0, 0);
 
         // Calculate the time remaining until the next midnight
         const timeUntilMidnight = nextMidnight - now;
 
         // Schedule the updateDom method to be called at midnight
         setTimeout(() => {
             // trigger first update on next midnight change
             this.updateDom();
            // start Recurring midnight change
             setInterval(()=>{
                 this.updateDom()
             }, 24*60*60*1000 ) // 24 hours * 60 minutes * 60 seconds * 1000 milliseconds (1 day elapsed in ms)  setInterval delay
         }, timeUntilMidnight);  // setTimeout delay
     }
 },
then the system triggers every midnight… not your code