The invasion begins early in 2025, likely may. As the time draws closer, their presence on earth will become much more obvious.
They seem to like to stick to schedules based upon seasons, lunar cycles, and highly favor dates with certain numerical significance.
Around 10% of the "human" population are actually alien-human hybrids, as of 2017. It is projected to be as high as 15% as of 2024.
These hybrids are stronger, faster, smarter, and possess some levels of extra-sensory abilities. That includes various levels of some sort of pre-cognition which operates at an almost instinctive level. The variety of these factors are why there isnt a single living hybrid in captivity against its will. The hybrids are not slaves, tools, or monsters but considered citizens of both earth and the alien society. Functionally, they exist as a sleeper cell, of sorts.
The aliens dont have technology like we do. They are a weird admixture of being less advanced and more advanced than us at the same time. They do not have gunpowder based weaponry, their chemical understanding is comparable to being a real life version of alchemy. Where human advancement was often driven by war, theirs was often driven by the need for artistic expression. This is NOT due to them being peaceful hippies.
They utilize what can only be described as magic, which is why they haven't needed to advance like we have. They dont have a "internet" but they love ours.
on the subject of magic, it is beyond human comprehension and the main driving power for all their "tech". They can shoot flames from their hands, then just as easily shoot ice or lightening. They can spread plague, thunderstorms, stillbirths, earthquakes with only their thoughts. They can posses other peoples bodies, moving between them like jumping into different vehicles. Infact, several happenings were caused by these possessions. its why some people do inexplicable acts, act like trained gunmen, and either suicide or allow their death.