McDonald's has 1000's of restaurants that are hiring all the time so you can always go and apply for a job. You don't have to wait for April 19th. You can go to each individual McDonald's store and apply there or you can go to their website to see what stores near you have jobs that are open.
McDonald's has been a longtime job source for teenagers and 2011 is no different. So, if you want to get a summer job behind the counter at McDonald's, now is the time to start looking.
You can also look for part time and full time summer jobs at Snagajob