What is Gigasecond?
A '''gigasecond''' (symbol: '''Gs''') is one billion [[second]]s. That is about 31.7 years. It can be written as 10<sup>9</sup> seconds. 3.16 Gs is about 1 [[century]] (100 years). 31.6 Gs is about 1 [[millennium]] (1000 years). This page lists times of between 1 and 1000 gigaseconds, or between 31.7 and 31,700 years. * [[1 E9 s|Shorter times]] * 351 years – [[Half-life (element)|half-life]] of [[californium]]-249 * {{0expr|{{CURRENTYEAR}} - 1655}} years – time since the [[Taj Mahal]] was built * {{0expr|{{CURRENTYEAR}} - 1611}} years – age of the [[King James Bible]] * 418 years – half life of [[silver]]-108 * 432.2 years – half life of [[americium]]-241 * {{0expr|{{CURRENTYEAR}} - 1492}} years – time since [[Christopher Columbus]] reached the [[New World]] * {{0expr|{{CURRENTYEAR}} - 1455}} years – time since the [[printing]] of the first [[Gutenberg Bible]] * 680 years – half life of [[niobium]]-91 * 790 years – amount of time the [[Zhou Dynasty]] lasted, the longest [[dynasty]] in [[China|Chinese history]] * 898 years – half life of californium-251 * 969 years – [[Book of Genesis|alleged]] age of [[Methuselah]] at death * 1000 years – one [[millennium]] = 3.16 x 10<sup>10</sup> seconds * {{0expr|{{CURRENTYEAR}} - 79}} years – time since the [[volcano|volcanic]] destruction of [[Pompeii]] * {{0expr|{{CURRENTYEAR}}}} years – time since the birth of [[Jesus Christ]], according to [[Dionysius Exiguus]] * {{0expr|{{CURRENTYEAR}} + 43}} years – time since the [[assassination of Julius Caesar]] * {{0expr|{{CURRENTYEAR}} + 322}} years – time since the death of [[Alexander the Great]] * {{0expr|{{CURRENTYEAR}} + 398}} years – time since the death of [[Socrates]] * {{0expr|{{CURRENTYEAR}} + 437}} years – age of the [[Parthenon]] * {{0expr|{{CURRENTYEAR}} + 752}} years – time since [[Rome]] was founded, according to legend * 3,200 years—time since the [[Greek Dark Ages]] and the beginning of the [[Iron Age]] * 3,800 years—time since [[Middle Bronze Age alphabets|alphabetic writing]] started * 4,200 years—time since