I was premature in my reply.
I copied and pasted your response, "every 90 days on third Friday starting this month" but it still comes up on my today's task.
Referring to that thread, he never said that syntax. He mentioned "every 90 days starting 25 Aug" but not with third Friday within it.
Though are you saying that a task entered like "every 90 days starting 25 Aug" is showing up Today on your list?
whoops! That'll do it; thank you!