example-1.go

func main() {
	// This will block for 5 seconds and then return the current time
	theTime := <-time.After(time.Second * 5)
	fmt.Println(theTime.Format("2006-01-02 15:04:05"))
}

example-2.go

func main() {
	// Set when we want to continue
	until, _ := time.Parse(time.RFC3339, "2023-01-01T00:00:01+02:00")

	// Wait until it
	<-time.After(time.Until(until))
}

example-3.go

func main() {
	// This will print the time every 5 seconds
	for theTime := range time.Tick(time.Second * 5) {
		fmt.Println(theTime.Format("2006-01-02 15:04:05"))
	}
}

example-4.go

func main() {
	for {
		select {
		// This usage will ignore actual time
		// Just runs in every 5 second
		case <-time.Tick(time.Second * 5):
			fmt.Println("I'm a bot that saying 'You are amazing' in every 5 second")
		}
	}
}