The 1st century was the century spanning AD 1 (I) through AD 100 (C) according to the Julian calendar. It is often written as the 1st century AD or 1st century CE to distinguish it from the 1st century BC which preceded it. The 1st century is considered part of the Classical era, epoch, or historical period. The 1st century also saw the appearance of Christianity.
AD 19 (XIX) was a common year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Silanus and Balbus. The denomination AD 19 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
The 10s decade ran from January 1, AD 10, to December 31, AD 19.
The 40s decade ran from January 1, AD 40, to December 31, AD 49.
The 50s decade ran from January 1, 50, to December 31, 59. It was the sixth decade in the Anno Domini/Common Era, if the nine-year period from 1 AD to 9 AD is considered as a "decade".
The 100s decade ran from January 1, 100, to December 31, 109.
The 110s decade ran from January 1, 110, to December 31, 119.
The 1st century BC, also known as the last century BC and the last century BCE, started on the first day of 100 BC and ended on the last day of 1 BC. The AD/BC notation does not use a year zero; however, astronomical year numbering does use a zero, as well as a minus sign, so "2 BC" is equal to "year –1". 1st century AD follows.
AD 7 was a common year starting on Saturday of the Julian calendar. In the Roman Empire, it was known as the Year of the Consulship of Metellus and Nerva. The denomination "AD 7" for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
AD 40 (XL) was a leap year starting on Friday of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus without colleague. The denomination AD 40 for this year has been used since the Early Middle Ages, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
AD 58 (LVIII) was a common year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Caesar and Messalla. The denomination AD 58 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
AD 77 (LXXVII) was a common year starting on Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Vespasian and Titus. The denomination AD 77 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
AD 80 (LXXX) was a leap year starting on Saturday of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Domitianus. The denomination AD 80 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
AD 82 (LXXXII) was a common year starting on Tuesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Sabinus. The denomination AD 82 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
AD 100 (C) was a leap year starting on Wednesday of the Julian calendar. In the Roman Empire, it was sometimes referred to as year 853 ab urbe condita, i.e., 853 years since the founding of Rome in 753 B.C. The denomination AD 100 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Year 40 BC was either a common year starting on Thursday, Friday or Saturday or a leap year starting on Thursday or Friday of the Julian calendar and a common year starting on Friday of the Proleptic Julian calendar. At the time, it was known as the Year of the Consulship of Calvinus and Pollio. The denomination 40 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Year 53 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Messalla and Calvinus. The denomination 53 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
The 0s began on January 1, 1 AD and ended on December 31, 9 AD, covering the first nine years of the Common Era. It is one of two "0-to-9" decade-like timespans that contain nine years, along with the 0s BC. Estimates for the world population by 1 AD range from 150 to 300 million.
