AD 42

AD 42 in various calendars
Gregorian calendar	AD 42; XLII
Ab urbe condita	795
Assyrian calendar	4792
Balinese saka calendar	N/A
Bengali calendar	−551
Berber calendar	992
Buddhist calendar	586
Burmese calendar	−596
Byzantine calendar	5550–5551
Chinese calendar	辛丑年 (Metal Ox); 2739 or 2532; — to —; 壬寅年 (Water Tiger); 2740 or 2533
Coptic calendar	−242 – −241
Discordian calendar	1208
Ethiopian calendar	34–35
Hebrew calendar	3802–3803
Hindu calendars
- Vikram Samvat	98–99
- Shaka Samvat	N/A
- Kali Yuga	3142–3143
Holocene calendar	10042
Iranian calendar	580 BP – 579 BP
Islamic calendar	598 BH – 597 BH
Javanese calendar	N/A
Julian calendar	AD 42; XLII
Korean calendar	2375
Minguo calendar	1870 before ROC; 民前1870年
Nanakshahi calendar	−1426
Seleucid era	353/354 AG
Thai solar calendar	584–585
Tibetan calendar	阴金牛年; (female Iron-Ox); 168 or −213 or −985; — to —; 阳水虎年; (male Water-Tiger); 169 or −212 or −984

Millennium:	1st millennium
Centuries:	1st century BC; 1st century ; 2nd century;
Decades:	20s; 30s; 40s ; 50s; 60s;
Years:	39; 40; 41; AD 42 ; 43; 44; 45;

AD 42 (XLII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time it was known as the Year of the Consulship of Caesar and Largus (or, less frequently, year 795 Ab urbe condita). The denomination AD 42 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.

Events

Romans take control of Ceuta, a port city on the North African side of the Strait of Gibraltar.
The territories of the current Algeria and Morocco become a Roman province.
Dalmatian legate Lucius Arruntius Camillus Scribonianus revolts, but his troops defect, and his rebellion quickly withers.
Claudius begins construction of Portus, a harbour bearing a lighthouse on the right bank of the Tiber.

The Chinese General Ma Yuan represses the rebellions of the Trưng Sisters in Tonkin.

25 January – The Apostle Paul is converted to Christianity (the exact date is not provided in texts, but the Roman Catholic Church chooses to commemorate this date).
Traditional date of foundation of the Coptic Orthodox Church of Alexandria by the apostle Mark the Evangelist.