|
|
|
|
|
|
Gigasecond is equal to 1 000 000 000 second (unit of time), comes from a combination of the metric prefix mega (M) with the second (s). Plural name is gigaseconds with symbol is Ms.
A day is a unit of time. In common usage, it is either an interval equal to 24 hours or daytime, the consecutive period of time during which the Sun is above the horizon.