Sent_en: 2zh At the time of the incident — approximately 2100 EST Saturday night or 0000 UTC Sunday morning — US country music band Sugarland were about to perform.
Sent_yy: 事件发生时大约是美国东部时间周六晚上九点或世界协调时间周日早上零点，美国乡村音乐乐队甜园合唱团正准备演出。