在2011年3月27日晚上八点半到九点半关灯一小时的翻译：9:30 on March 27, 2011 to turn off the lights for one hour 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

In at 20:30 on March 27th, 2011 to the nine-thirty lights one hour

9:30 on March 27, 2011 to turn off the lights for one hour

In March 27, 2011 evening eight and half to nine and half Guan Deng an hour

In March 27, 2011 8:30 pm to 9:30 1 hour the lights

9:30 on March 27, 2011 to turn off the lights for one hour