Twitter/X: Tue-Thu, 9-11 AM. Short, punchy, 1-2 tweets. Use threads for longer content.
LinkedIn: Tue-Wed, 7-10 AM. First line is the hook. Use line breaks. Story format works best.
Instagram: Mon-Fri, 11 AM-1 PM. Carousel posts get 3x engagement. Caption under 125 chars shown fully.
General: Consistency > timing. Engage with comments within 1 hour. Repurpose across platforms with tweaks.