The deadline for Armageddon has long passed.
Also, Armageddon could have been avoided:
Since it's all about killing humans, if God could almost wipe out everyone human being during the Flood & plans on destroying humans again at Armageddon then why not just destroy Adam & Eve before they had any children and start over again, and keep starting over if necessary, until he got the perfect couple, since it's all about killing humans?
There would be less collateral damage. All of the human suffering, all of the wars and diseases could have been avoided etc etc
But I guess God can only be satisfied if there's some drama.