Show HN: Free earnings calendar for US stocks

- An "earnings calendar" tracks when publicly traded US companies report their quarterly financial results. These reports, called earnings releases, can cause large stock price moves. - Zenvesto is a small financial data site; its free calendar competes with paid services like Wall Street Horizon and Bloomberg, which can cost thousands of dollars per year. - The creator posted this as "Show HN" — a section of Hacker News where makers share side projects or new tools they've built. - For retail (individual) investors, free access to structured earnings dates — including after-market or pre-market timing — is useful but often hidden behind paywalls or scattered across broker platforms.