Social Media The best day of the week to tweet and update Facebook If your company or client is unveiling a Twitter of Facebook campaign, one day is better than any other for engagement, according to a new report. By Michael SebastianJune 28, 2012 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.