On April 16, 1178 B.C. a total eclipse blotted out the sun at high noon; astronomers know that much for certain. The other events of that day are considerably less definite, but researchers say the date may also figure large in Homer's Odyssey, the epic tale of Odysseus's journey home to Ithaca after the Trojan War. Using astronomical clues from the text, researchers say that Homer may have indicated that the day of the eclipse was also the day that Odysseus finally reached home--arriving just in time to slaughter his wife's persistent suitors.