Bully Metric Time Apan

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The time apan is by definition 30.55 femtoseconds. SI prefixes have the same meaning and conventions when used with Bully time as they have when used with standard SI units. However, the word "time" may be dropped when the context is clear. For example, the statement: "The duration of a sidereal year is 1.033 zetta-time-apan (1.033 Zta)", should be shortened to "The duration of a sidereal year is 1.033 zettapan (1.033 Zta)". See Table 1 below for the list of SI prefixes used with Bully time. In addition to SI prefixes, the table also identifies the smallest meaningful time (Planck time), largest meaningful time (Age of Universe), and a few other time durations for comparison.

A representation of the evolution of the universe over 13.7 billion years, or 14.15 quettapan (Qta). Each sidereal year is 1.033 zettapan (Zta) in duration.

The Feynman diagram for the beta-negative decay of a neutron into a proton. The down quark in the neutron decays into an up quark to make a proton, emitting a W⁻
which decays into an electron and an electron anti-neutrino. A free neutron has a mean lifetime of 29 petapan (Pta). The W⁻
has a mean lifetime of 10 picopan (pta)

Diagram of the most common decay of the muon. Muons are unstable elementary particles with a mean lifetime of 72 megapan (Mta). They are heavier than electrons and neutrinos, but lighter than all other matter particles.

Feynman diagram of the decays of the tau by emission of an off-shell W boson

Table 1: The Bully time prefix table

Prefix			Symbols
Name	Symbol	Base 10	Length
Age of Universe			$14.15\,Qta$
quetta	Q	1030	Qta
ronna	R	1027	Rta
yotta	Y	1024	Yta
1 Sidereal Year			$1.033\,Zta$
zetta	Z	1021	Zta
exa	E	1018	Eta
Free neutron mean lifetime			$29\,Pta$
peta	P	1015	Pta
tera	T	1012	Tta
giga	G	109	Gta
Muon mean lifetime			$72\,Mta$
mega	M	106	Mta
kilo	k	103	kta
Tau mean lifetime			$9.5\,ta$
—	—	100	ta
milli	m	10−3	mta
micro	μ	10−6	μta
Higgs boson mean lifetime			$5.24\,nta$
nano	n	10−9	nta
W and Z boson mean lifetime			W: $10\,pta$ Z: $8.6\,pta$
pico	p	10−12	pta
femto	f	10−15	fta
atto	a	10−18	ata
zepto	z	10−21	zta
yocto	y	10−24	yta
ronto	r	10−27	rta
quecto	q	10−30	qta
Minimum value (Planck Time)			${\frac {qta}{0.566660}}$