update time daily at 4 AM using task

include/display.h

@@ -83,7 +83,7 @@ namespace Display {
       if (currentHour != hour()) {
         currentHour = hour();
         if (currentHour == 4) {
-          Ntp::updateTime();
+          Ntp::tUpdateTime.restart();
         }
         if (currentHour == 8) {
           Brightness::set(BRIGHTNESS_DAY);

include/ntp_time.h

@@ -14,16 +14,16 @@ namespace Ntp {
     TimeChangeRule CET = { "CET ", Last, Sun, Oct, 3, 60 };       // Central European Standard Time
     Timezone CE(CEST, CET);
 
-    void updateTime() {
+    Task tUpdateTime(TASK_IMMEDIATE, TASK_ONCE, []{
         if (timeClient.forceUpdate()) {
             time_t newTime = CE.toLocal(timeClient.getEpochTime());
             setTime(newTime);
             Serial.println(asctime(localtime(&newTime)));
         }
-    }
+    }, &ts);
 
     void setup() {
-        timeClient.begin();
         Serial.println("NTP setup");
+        timeClient.begin();
     }
 }

src/esp_clock.cpp

@@ -84,7 +84,7 @@ void onWifiConnected() {
   Wifi::printStatus();
   Ota::tLoop.enable();
   Mqtt::tReConnect.enable();
-  Ntp::updateTime();
+  Ntp::tUpdateTime.enable();
 }
 
 void checkWifiCallback() {