"What time is my train?"

Yeah. It sounds weird. 'When is my train coming?' or 'where is my train?' seems more natural.

calling "when's my train?" almost correct should just be correct. In English we often shorten this to "When's my train?"

When?

The recording of поїзд doesn't sound phonetic. Sounds like "Poized" but looks like it should be (Po-yi-zid). Usually, Ukrainian words are phonetic. Is this an exception?