Read OP's title more carefully. OP provided a tweet by EM with a poem and noted the date of said tweet was ten days before the first Q post. Apparently yesterday EM tweeted a line from that same tweet/poem in 2017 so OP is conjecturing that perhaps it signals another ten day delta to the next post from Q who has long gone silent. It could be a coincidence, perhaps EM really likes that poem and nothing unusual will happen ten days from April 25th. Perhaps something noteworthy will happen. Time will tell.
Read OP's title more carefully. OP provided a tweet by EM with a poem and noted the date of said tweet was ten days before the first Q post. Apparently yesterday EM tweeted a line from that same tweet/poem in 2017 so OP is conjecturing that perhaps it signals another ten day delta to the next post from Q who has long gone silent. It could be a coincidence, perhaps EM really likes that poem and nothing unusual will happen ten days from April 25th. Perhaps something noteworthy will happen. Time will tell.