Correct answer is false because it means one not two days.

Nudiustertian originated from Latin nudius tertius, from the phrase nunc dies tertius est ("now is the third day"). Coined by Nathaniel Ward(1578-16520 in his book The Simple Cobler of Aggawamm in America (1647). The word nudiustertian, which Ward coined, appeared in the first edition of the book published in the same year.

USAGE:

"I'd ordered the key on-line for £48 that nudiustertian morning and was not expecting it to arrive until the following week."

More Info: en.wiktionary.org