Disillusioned JW:
Jeffo, thanks for informing me that the WT's idea that the Jews were especially expecting a Messiah around 30 CE or that it was because of anything in Daniel comes from a Christian tradition. Do you have a source that the idea is from a Christian tradition, instead of from a historical source (prior to 30 C.E.) saying some Jews had come up with the idea from their study of the book of Daniel?
Christians are the only ones who make the claim.
In the first century, the Jews were under Roman rule and there were Jewish groups that expected the 'messiah' to liberate the Jews, but there was no specific expectation he would appear in 30 CE (though Jesus' ministry as described in the Bible would have begun in 26 CE). And Jesus didn't fill the role of what the Jews generally expected (or expect) of the 'messiah' anyway.
Because the Jews viewed (and view) Daniel among the Writings rather than the Prophets, they weren't generally looking to Daniel to point to the arrival of the 'messiah'. Of course that doesn't mean that no Jews at all interpreted Daniel that way, though there is no indication that they specifically made any such claims before '30' CE (and the arithmetic doesn't work for the correct year, 26 CE, anway; and that's before you get to the problem that Daniel doesn't say the 'messiah' would be 'cut off' at 'the half of the week' as claimed by JWs and similar Christian denominations, but rather only after the '62 weeks' when those denominations say is when he first appeared). There was a sect of Judaism that sprung up in the mid-first century that accepted Jesus as the Jewish messiah, with a post hoc rationalisation (i.e. the 'ransom') for why he died rather than liberating the Jews from the Romans. That group significantly diverged from the beliefs of Judaism due to Roman influence. Today, we know it as Christianity.
The only references to Daniel in the NT were written not only
decades after Jesus' death but also after the Jewish revolt in 66 CE,
and the earliest NT books (i.e. Paul's writings) give almost no
biographical details of Jesus at all let alone that they were expecting Jesus right when he appeared.