Ask HN: How long did it take you to launch your side project or full product?

An often-repeated piece of business advice is to launch your software product as soon as possible, gain feedback from users, and then rapidly refine your product based on that feedback. There's also a counter view that cautions against launching obviously incomplete products or services too quickly. How long did it take you to launch your side project or main product? And do you feel you launched at the right time? Or do you feel you launched too early or too late?