One month ago,
In the span of a month, Earth had also become aware of the impending doom that was about to befall mankind. At first, they saw a certain heavenly object which resembled a huge red planet. The astronomers who saw it first decided to name it Orus... but it didn't take long before they realized that it wasn't really a planet.
Firstly, the red blobs that revolved around the huge red planet resembled the meteor that landed on Japan more than a month ago. The heroic feat of Mah-man Rider brought about its demise... but it was obvious that the blob was a real threat, and they had to prepare for that.
For the first few months, Star Spangled started mobilizing the Top Ten in the United States of America, giving them ample time to prepare while slowly releasing the rumor about the threat. With this, they won't cause worldwide panic and allow the superheroes to act more accordingly as they prepare for the inevitable war.