How often where they held?

Answer 1

a strange question it is but i can answer... it is every milli second every 4 yrs and every nano second depening if they stop a strange question it is but i can answer... it is every milli second every 4 yrs and every nano second depening if they stop

Answer 2

1. about 4 hrs

Every 4 years

Answer 3

Every four years.