Time expressions: NEXT and LAST

[Romany]

Hi! I have a question about time expressions.

Right now, it's October 2008.
If I say "I went to London LAST JUNE" would I mean June 2008 or June 2007?
Would it be correct to say "I went to London this June" if I meant June 2008?

Similarly, lets pretend it's Monday today. if I said "I'll call you next Tuesday" would I mean Tuesday TOMORROW or Tuesday seven days from now?

Please help, I can't find the answer anywhere!

[Mister Micawber]

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Right now, it's October 2008.
If you say "I went to London LAST JUNE" you would probably mean June 2008.
Would it be correct to say "I went to London this June" if I meant June 2008?-- Yes

Similarly, let's pretend it's Monday today. If you said "I'll call you next Tuesday", you would mean Tuesday seven days from now.
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Native English teacher at Mister Micawber's