13 months calendar

Question: What do you think of a 13-month calendar? Answer: A 13-month calendar made of 28-day months is a beautifully simple and internally consistent system. Each month would always contain four full weeks, aligning days and… ChatGPT (OpenAI) point of view about Year Zero

Question:Could a 13-Month, 28-Day Calendar with “Zero Days” Work? That’s a fascinating idea for a calendar reform!The type of calendar you’re describing, with 13 months of 28 days and “neutral days” (or intercalary days) to… Gemini point of view about Year Zero