Unfortunately, there's no information yet. Just a social media announcement with an image and the text "The will of the people will stand."
The will of the people will stand. pic.twitter.com/SKJCRLhRKn— Women's March (@womensmarch) February 6, 2017
I hope the "date to be announced" is far in the future. We need the same amount of planning time and time to spread the word as we had for the March, at least. It needs to be huge to get people to pay attention, and it's not going to be viable for everyone. It's important to recognize that many people can't afford to miss a day of work for anything short of an emergency. Maybe not even that. This is where those of us with more privilege can really step up. If I'm still in my contract when the strike happens, I'll be participating. I'm sure they'll have ways for those who can't miss work to participate.