The letter 'n'
letter n
n is the word that is not present in days,decades and years but present in seasons seconds and centuries
The letter 'A' =]
The letter n.
160689980 minutes or 2678166.333 hours or 111590 days or 305 years or 30.5 decades or 3 centuries.
Millennia, centuries, decades, years, months, weeks, days, hours, minutes and seconds.
second minute hour day week month year
Nanoseconds (or smaller), seconds, minutes, hours, days, weeks, months, years, decades, centuries, millennia. Take your pick.
seconds, minutes, hours, days, weeks, months, years, decades, centuries, eons etc.
Nano-seconds Milli-seconds Seconds Minutes Hours Days Months Years Decades Centuries Milleniums
The letter n.
The customary units for time are seconds (1/60 of a minute), minutes (60 seconds), hours (60 minutes), days (24 hours), years (365 days), decades (10 years), centuries (100 years), and millenniums (1,000 years).