Posting at the same time can help some people notice you more often because they start expecting your content at that time. It can also help you stay organized and keep a steady flow of posts. But it is not a strict rule. If your audience is active at different times, it might be better to post when most people are online. You can try different times for a few days and watch when more people read or interact. Being consistent in quality is more important than exact timing. What do you think?