Lol, I have two sisters. One of them is named Jane, the other is named Emily.
The u in juli is a "longer" ponunciation, check here to compare: http://www.heardutchhere.net/DutchPronunciation.html#J
That's a great page to hear and compare pronunciations of similar words without having to wait for them to appear in sentences. Thanks!
Maybe I'm wrong, but it seems to me the intonation of the pronunciation here is wrong. It feels just flat, and like it should raise towards the end a little more, even if the verb has been inverted.
But this is TTS software, not an actual recording, so it will obviously get some things wrong.
If I was to say "Are ALL your birthdays in august?" would i say "Zijn alle jullie verjaardagen in augustus?