What is a list of names for time?

List of Names

Year = Y = 1 Year

Decade = D = 10 Years

Century = C = 100 Years

Millennium = M = 1000 Years

Megaannum = MA = 1 million Y

Gigaannum = GA = 1 billion Y

Petaannum = PA = 1 trillion Y

Teraannum = TA = 1 quadrillion Y

Exaannum = EA = 1 quintillion Y

Zettaannum = ZA = 1 sextillion Y

Yottaannum = YA = 1 septillion Y

Brontoannum = BA = 1 octillion Y

Geopannum = GEA = 1 nonillion Y

Saganannum = SA = 1 decillion Y

Alphaannum = AA = 1 undecillion Y

Kyratannum = KA = 1 duodecillion Y

Amosannum = AMA = 1 tredecillion Y

Pectrolannum = PEA = 1 quattourdecillion Y

Bolgerannum = BOA = 1 quindecillion Y