Here we present the variability time-scales for main sequence stars.

Table 1: Here we present the variability time-scales for main sequence stars.

Variability Time-Scale for MSS
Class	T = 300 K	T = 4000 K
O	Hundreds of years	Months - Years
B	Years - Hundreds of years	Day - Months
A	Years	Hours - Day
F	Years	Hours
G	Years	Hours
K	Months - Year	Hours
M	Days - Months	Minutes - Hour