Gregorian calendar

The Gregorian calendar is the current calendar for the people of Earth and Luna, and still the most widely-used system of timekeeping among humanity. The other two competing systems are the Helios Calendar and the Arean calendar, as a standard timekeeping measure and a timekeeping system for Mars, respectively.

• Solar Storms Calendar Converter
• One modification to the calendar has been made. Every 4,000 years is considered to be a skip year, where a leap year is not counted, in order to bring the calendar closer in line with the mean tropical year.

The rising popularity of the Helios Calendar, the slow diaspora of humankind, combined with the nearly unworkable problem of keeping the calendar truly intact leads many to expect that it will be left to die, likely along with the Arean calendar, in twenty thousand years or so. Eventually all that will remain is the echo of the second and hour in the more advanced calendar that were once based off of Earth's rotation.