what #hashtag are you proposing?
The memes about a 24 hour warning of an attack should have a date/time in them.
Warning from
now until 2:15 AM 17 February 2018.
Because if the memes are still floating around in the twittersphere a few days from now, they will just be alarming junk "crying wolf".
They need to have an expiration date/
time.