 
 <prompt> Wetin be ishew wit di Gregorian calendar? Based on di previous question, write a context wey contain di ansa. E fit be 1 - 20 sentences. Context: <response>: The Gregorian calendar na solar calendar. A regular Gregorian year dey consist of 365 days, but as for the Julian calendar, for a leap year, dem dey add one extra day to February. For the Julian calendar, leap year dey happen every 4 years, but for the Gregorian calendar, dem no dey add 3 extra days every 400 years. For the Julian calendar, dem dey add the leap day by doubling 24 February, and the Gregorian reform no change the date of the leap day. For the modern period, e don dey normal to number the days from the beginning of the month, and February 29th dey often see as the leap day. Some churches, especially the Roman Catholic Church, dey shift February festivals after the 23rd by one day for leap years. 