PUZZLE 113 A Long Conversation

A man and his wife are having a strange conversation.
The man says to his wife, 'It was our seventh wedding anniversary on 30 June last year, and it will be our tenth wedding anniversary next year.'
What was the date that they were having this conversation?
Touch the boxes to input the month and day.

Hint 1

Look at what was said and try to work through the details.
He said it was their seventh wedding anniversary last year, which means the conversation must have taken place between 1 January and 31 December in the year of their eighth wedding anniversary.

Hint 2

The husband said that it would be their tenth wedding anniversary next year, which means that the conversation must have taken place between 1 January and 31 December in the year of their ninth wedding anniversary.

Hint 3

If you look at hints one and two together, it doesn't look like the conversation can have taken place all on the same day.
But there is a small window when the timing could have been right.

Super Hint

What about if the date changed mid-conversation?
Work out the two dates it would be and then figure out when the conversation started.

Answer for 'A Long Conversation'

The answer is '31 December'.