I saw this Iridescent Cloud over at Singapore last Friday. It was the same type of cloud that I saw in 2006. I was trying to spot it for many years. Finally, saw it last week. But it was too late as most of it was covered by the cloud.
BTW, the above shot was taken in 2006. The one taken last week as show below.
And this is the one that was taken using my trusty Nokia N70. Taken at Changi. I even called up SPI (Singapore Paranormal Investigators) and they quickly helped me to identify it as iridescent cloud. That is how I got to know this term 
.
And here is the same one. Look at the “path” that it makes….
If you have interesting ones, let share it. You can provide the link on my comment page.
[ad#boxlist]