25 BC

25 BC in various calendars
Gregorian calendar	25 BC; XXV BC
Ab urbe condita	729
Ancient Greek era	188th Olympiad, year 4
Assyrian calendar	4726
Balinese saka calendar	N/A
Bengali calendar	−617
Berber calendar	926
Buddhist calendar	520
Burmese calendar	−662
Byzantine calendar	5484–5485
Chinese calendar	乙未年 (Wood Goat); 2673 or 2466; — to —; 丙申年 (Fire Monkey); 2674 or 2467
Coptic calendar	−308 – −307
Discordian calendar	1142
Ethiopian calendar	−32 – −31
Hebrew calendar	3736–3737
Hindu calendars
- Vikram Samvat	32–33
- Shaka Samvat	N/A
- Kali Yuga	3076–3077
Holocene calendar	9976
Iranian calendar	646 BP – 645 BP
Islamic calendar	666 BH – 665 BH
Javanese calendar	N/A
Julian calendar	25 BC; XXV BC
Korean calendar	2309
Minguo calendar	1936 before ROC; 民前1936年
Nanakshahi calendar	−1492
Seleucid era	287/288 AG
Thai solar calendar	518–519
Tibetan calendar	阴木羊年; (female Wood-Goat); 102 or −279 or −1051; — to —; 阳火猴年; (male Fire-Monkey); 103 or −278 or −1050

Millennium:	1st millennium BC
Centuries:	2nd century BC; 1st century BC ; 1st century;
Decades:	40s BC; 30s BC; 20s BC ; 10s BC; 0s BC;
Years:	28 BC; 27 BC; 26 BC; 25 BC ; 24 BC; 23 BC; 22 BC;

Year 25 BC was either a common year starting on Wednesday, Thursday or Friday or a leap year starting on Wednesday or Thursday (link will display the full calendar) of the Julian calendar (the sources differ, see leap year error for further information) and a leap year starting on Tuesday of the Proleptic Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Silanus (or, less frequently, year 729 Ab urbe condita). The denomination 25 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.

Events

Imperator Caesar Augustus becomes Consul for the ninth time. His partner is Marcus Junius Silanus.
The temple to Neptune on the Circus Flaminius is built.
Estimation: Rome, capital of the Roman Empire, becomes the largest city in the world, taking the lead from Chang'an, capital of China.^[1]
Galatia becomes a Roman province after the death of its king. The Roman troops stationed there are relocated to Egypt.
The Roman colony of Emerita Augusta is founded (present-day Mérida).

The government gives its tributary states 20,000 rolls of silk cloth and about 20,000 pounds of silk floss.