Thats why multi billion dollar companies do this little thing in business called "Planning" you may have heard of it. Its when they look to the calendar in advance and make business decisions on when release dates will be able to be realisticly met, And what time/locations will be best to release said product to yield maximum profit and hype. A good example of this is Disney releasing Star wars before christmas, why? People and families have more time off and people buy presents for their loved ones over the christmas period. Will this increase their merchantising sales? Most likely! Good release timing Star wars!
Want a bad experience of when to release your product? Aww hell I think even you Mr Internet Edgy guy can guess who I'm gona say