The start of the Ethiopian year (Feast of El-Nayrouz) falls on 29 or 30 August (in the year just before the Julian leap year). This date corresponds to the Old-Style Julian Calendar; therefore, the start of the year has been transferred forward in the currently used Gregorian Calendar to 11 or 12 September (in the year just before the Julian leap year). This deviation between the Julian and the Gregorian Calendar will increase with the passing of the time. One may observe the real start date in future centuries in a Gregorian to Ethiopian Date Converter.