u/Fit-Introduction8575

As in module, endurance, endure, duration, and Durango.

According to the Cambridge dictionary, the a 'j' sound, as in jump, is used in UK English (/dʒ/) while the 'd' sound, as in door, is used in US English (/du/).

https://dictionary.cambridge.org/pronunciation/english/duration

I haven't thought much of it, but the 'j' sounds more natural and is easier to say. The 'D' sound makes more sense with proper nouns that start with a D. Unless you are a Brit, then you would say Durer as 'juror' and Durant as 'juran'.

Edit: now it seems that another difference is whether you rhyme the "ur" in these words with 'her' or with 'sewer' ( -er or -yoor)