Is the calendar accurate? What weather is accurate in the current perpetual calendar software?

Is the calendar accurate? I just downloaded it and used it for less than a month, and it feels good. In terms of weather, it is still relatively accurate. The weather of ink calendar is actually the weather forecast of ink weather, and the accuracy is relatively high. I used to watch the forecast of ink weather when I was on a business trip. Now directly ink the calendar in one step, see the travel date and weather, and solve it in one stop. Besides watching the weather and calendar, the ink calendar and health consultation of health travel can also be read at any time, which is quite practical.