AD stands for Anno Domini means "in the year of (our) Lord".
anno Domini, Latin for "in the year of the Lord"
The letters AD stand for Anno Domini. The phrase Anno Domini is actually medieval Latin which means 'the year of Our Lord'.
There is no designated last year for the AD calendar. AD takes it year by year and keeps going that way. It is not like the Mayan Calendar. So there is no designated last year in the AD calendar. Nobody knows. It could be this year. AD will just keep on going until the end.
AD stands for Anno Domini, which is a Latin term meaning "in the year of our Lord." It is used to refer to the years after the birth of Jesus Christ in the Gregorian calendar.
The 100th calendar year to start on January 1 is the year 100. Calendar years are counted from year 1 AD onward, so the first calendar year is 1 AD, the second is 2 AD, and this continues sequentially. Therefore, the 100th year in this sequence is 100 AD.
Are you asking what BC and AD are, they are Before Christand the Latin phrase Anno Domini meaning Year of the Lord, never heard of AC on calendars.
Anno Domini - Latin for in the year of the Lord
It is the year the Gregorian Calendar was introduced.
It's 138 AD (as 2012 AD ⇒ 5114 Kali Yuga)
It became year one in the Islamic calendar
It is the Hijra calendar Lunar year. The zero year of this calendar is the year 622 AD when prophet Muhammad (peace be upon him) left Mecca to Medina.
Islamic calendar starts with the year 622 AD when Prophet Muhammed and his companions were forced to flee Makkah for Medina - this was know as the Hijra i.e. year of Hijri. Therefore the the 570 AD, when Prophet Muhammed was born, could be translated to the year 52 (BH) in the Islamic Calendar.