|
|
|
|
|
|
Yoctosecond is equal to 10-24 second (unit of time), comes from a combination of the metric prefix yocto (y) with the second (s). Plural name is yoctoseconds with symbol is ys.
A month is a unit of time, used with calendars, which is approximately as long as a natural period related to the motion of the Moon; month and Moon are cognates.