This, of course, differs from the solar year by ten days and a bit.
Is it impious to ask how these builders knew the solar year so completely?
In this way the solar year might be mapped out and divided into Solstices and Equinoxes.
Yes, invariably; and the interval in question is termed the solar year.
But this was very irregularly done, and the civil year had got to be far away from the solar year.
These dates coincide with none of the four great hinges on which the solar year revolves, to wit, the solstices and the equinoxes.
He performs twelve labors, corresponding to the twelve months of the solar year.
They knew that the true length of the solar year was 365 days and a quarter, nearly.
Astronomy was sufficiently understood for the accurate measurement of time in the divisions of the solar year.
The adjustment of the solar year to correspond with the lunar year and of the two with the civil year dates from this period.