The cardinal compass point that is at 90 degrees(noun)
WordNet. Princeton University. 2010.
Use "due east" in a sentence
"So, although the sea is twenty-five miles due east at Walberswick, I can still enjoy some of the pleasures of living beside it: the big skies and wide, dramatic sunsets."
"Next, to the southward, was the Williamsburg Road, which followed a course almost due east from Richmond to Seven Pines and thence to the Chickahominy at Bottom's Bridge."
"They could easily have sent huge forces of men to check out every waterfall in the Zagros Mountains due east of Baghdad, Hilla,and Qurna by now."