EventSnoozer

Current library allows You to store events and dispatch them later., _(*2)

Usage

Implement EventStorageInterface or use MemoryEventStorage. I suggest to use database or cache for storing events. For example, I'll use MemoryEventStorage.
It will store snoozed events until script stop running., _(*3)
Create event class that you want to save. You could extend EventDispatcher Event class, but if you want to specify additional data and/or priority, extend RealEvent class., _(*4)

<?php

namespace MyApp;

use EventSnoozer\RealEvent;  

class MyEvent extends RealEvent
{
    const NAME = 'my.event';
}

Instantiate EventSnoozer class and use it for saving events.

<?php

namespace MyApp;

use EventSnoozer\EventStorage\MemoryEventStorage;
use EventSnoozer\EventSnoozer;
use MyApp\MyEvent;
use Symfony\Component\EventDispatcher\EventDispatcher;

$eventStorage = new MemoryEventStorage();
$eventDispatcher = new EventDispatcher();
// Add listeners/subscribers for your events

$eventSnoozer = new EventSnoozer($eventDispatcher, $eventStorage);

$event = new MyEvent();
$event->setPriority(10)
    ->setAdditionalData(array('data' => 'value'));

$eventSnoozer->snoozeEvent(MyEvent::NAME, $event, '+10 min');

Use EventSnoozer for dispatching saved events.
MemoryEventStorage would select events ordered by priority and runtime.

<?php
namespace MyApp;

use EventSnoozer\EventStorage\MemoryEventStorage;
use EventSnoozer\EventSnoozer;
use Symfony\Component\EventDispatcher\EventDispatcher;

$eventStorage = new MemoryEventStorage();
$eventDispatcher = new EventDispatcher();
// Add listeners/subscribers for your events

$eventSnoozer = new EventSnoozer($eventDispatcher, $eventStorage);

$eventSnoozer->dispatchSnoozedEvent(); // For single event
$eventSnoozer->dispatchMultipleSnoozedEvents(5); // For multiple events

I suggest to use symfony/console for creating console commands and run it in background by cronjob., _(*5)