When did great britain give back hong kong?
No context provided
At what time did great britain give back hong kong?
midnight
Consequently, because ceding Hong Kong came at the end of half a century of decolonisation, and because the handover meant that the United Kingdom became without significant overseas territories, dominions, or colonies for the first time in its history (Great Britain, having been bequeathed the incipient domains of its later empire by inheriting the colonial possessions of the Kingdom of England upon the passing of the Acts of Union 1707, always having been an imperial power, ab initio) the handover of Hong Kong to China is regarded by some as marking the conclusion of the British Empire, with 1 July 1997 being its end date and the handover ceremony being its last diplomatic act.
On what date did great britain give back hong kong?
1 July 1997
Handover of Hong Kong
Handover of Hong Kong
https://en.wikipedia.org/wiki/Handover%20of%20Hong%20Kong
The transfer of sovereignty over Hong Kong,[1][2][3] commonly known as the handover of Hong Kong (shortened to the Handover and the Return in mainland China), was the formal passing of responsibility for the territory of Hong Kong from the United Kingdom to the People's Republic of China at midnight on 1 July 1997.

Handover of Hong Kong
The transfer of sovereignty over Hong Kong from the United Kingdom to the People's Republic of China happened at midnight on 1 July 1997.