En davis ponen esta información:
If winter seems to be longer this year, it's not your imagination. It's leap year, which comes every four years. Or does it? Well, here's how to tell. The year must be divisible by 4. If the year is the last year of a century like 2000, then it is only a leap year if it is also divisible by 400.
So, if we have such a hard time remembering which years are leap years, how do our weather stations keep track? They don't, so you need to be alert. The weather station console will display March 1 on February 29. You can correct the date on or after the real March 1st, by using the Time and Enter keys on your display console.
But what happens to your weather data? If you are using WeatherLink for Mac (1.2 or above) or Windows, nothing happens to your data. Just download your station without changing the date, and the software will automatically guide you through the correction process. WeatherLink will even ask if you want it to reset your console. It couldn't be easier!