Q: WHAT YEAR DID SETH DIE?
A: IT DEPENDS WHAT CALENDAR YOU ARE USING!
On the Gregorian calendar (the one you might have on your wall) the year was 3004 BC.
On the Hebrew calendar, sometimes called the biblical calendar, the year was 1043 AM.
Genesis 5:8 - And all the days of Seth were nine hundred and twelve years: and he died.