It’s happened 8 years ago on 11th September 2001.
Back then, I still working at a Singapore bank and was a year away from quitting-job-enrol-medicine-school.
It’s about 9 pm when I tuned to satellite TV TVBS channel. I first noted it shows a burning building. After a short while, I just realised that the burning building was the Pentagon. I was surprised and when I switched to CNN, even bigger surprise, the World trade center had been attacked.