Who knows three hundred twelve?

?שנים עשר ושלוש מאות - מי יודע

In the spirit of the song "Echad - mi yodeya", please post interesting and significant Jewish facts about the number 312.

Don't dwell on lazy gematria; it's bad to get caught up in something so dry.

Check out for the previous three hundred eleven entries in this ongoing series.

Please include sources for your information wherever possible, as with all other answers on this site.

  • 2
    It's more embarrassing to get caught up in something so dry.
    – Double AA
    Jan 17, 2013 at 0:56
  • @DoubleAA Still worse if you get arrested and taken captive for doing so.
    – Fred
    Jan 17, 2013 at 2:57
  • @Fred "caught up," even
    – Isaac Moses
    Jan 17, 2013 at 4:52
  • @IsaacMoses Ah, I didn't notice that.
    – Fred
    Jan 17, 2013 at 5:20