The BC (Before Christ) era counts backward from year 1 AD, starting from 1 BC. There is no year zero in this system, so the years recorded in BC range from 1 BC to any given earlier year, such as 2 BC, 3 BC, and so on. Therefore, the number of years recorded in BC is infinite, as it can continue indefinitely into the past.
470 years.
918 years
2451 years
Every millennium, including the 5th millennium BC, is 1000 years.
17,000 years
It has been over 2000 years. The first recorded match is from 23 BC.
470 years.
2451 years
49 years
Battle flags have been used for many thousands of years. Banners (flags) are recorded in the Bible as early as 2000 BC.
918 years
90 years.
545 years.
2451 years
1900 years.
2450 years
2451 years.