sentences:  For example, the eclipse of October 26, 1961 BC is in solar saros series 2.Saros series, of course, went on before these dates, and it is necessary to extend the saros series numbers backwards to negative numbers even just to accommodate eclipses occurring in the years following 2000 BC (up till the last eclipse with a negative saros number in 1367 BC).For solar eclipses the statistics for the complete saros series within the era between 2000 BC and AD 3000 are given in this article's references.