Is it OK to share a free, no-signup futures calendar and hours tool?

Hi all. We run Sunday Gap, a free weekly futures newsletter with a few free reference tools: an economic calendar in Central time, market hours and holiday schedules, and tick-value calculators for the common contracts. No ads, nothing for sale, no referral links, and the tools work without signing up.

Before posting anything, we wanted to check the rules. Is it OK to share a link to free tools like these, and if so, which section is the right one? If the preference is that we just answer questions in existing threads without linking, that's fine too.

Thanks.