In Australia, Queens Birthday public holiday is even celebrated on different dates in different states. Most states, first Monday in June. Queensland, first Monday in October. In Western Australia, it is not a fixed date and the state government chooses a new date each year, but usually they pick either the last Monday of September or the first Monday of October. (WA does have a public holiday on first Monday in June, but that's not Queens Birthday, that's Western Australia Day.)

I maintain that the Fourth of July should be made a floating holiday, on the first Thursday in July, to facilitate 4-day weekends.

So this year, for instance, the calendar would go July 4 (Independence Day, Thursday) - July 1 (Friday) - July 2 (Saturday) - July 3 (Sunday) - July 5 (Monday).

It's not a public holiday in the UK. Some civil servants get a 'privilege day' off, but most Brits don't even know about this.

Depends on the day that people say God ordained her to be Queen?