I believe everyone is familiar with Google Calendar, and many people use it to manage their personal schedules. Today, I'm going to talk about the exploration of a free SMS reminder application based on Google Calendar. This allows you to receive weather forecasts for free via Google Calendar. Many people may think, "What's the point of this Google Calendar SMS reminder? It's just another alarm clock function that can be completely replaced by the Outlook app on our phones." But you're mistaken. The strength of Google's products lies in their openness and shareability. Google Calendar’s support for “EVENTS” (events) and various standard calendar formats is what makes it so powerful.