If you stepped outside before sunset on Tuesday (Mar 21) evening, you might have noticed many people with their phones pointed towards the sky.
Why? No, they were not catching the latest Pokemon, or trying to detect extra-terrestrial life forms. They were trying to snap photographs of a beautiful double rainbow that added a brilliant hue to the evening sky.
User Jerry Tang managed to snap a photo of the full rainbow from from the National Gallery Singapore. It appeared to span almost the whole length of the Padang from Suntec City's towers to Marina Bay Sands, with icons like the Singapore Flyer and the Esplanade seeming like they were underneath.
"Never have I seen such a nice rainbow against our city. After editing I saw two instead of one rainbow. This picture does not do justice to natural beauty!" Mr Tang wrote.
Other users also shared their snaps on Facebook and Instagram, with sightings of the rare phenomenon in areas including the central business district and Toa Payoh.
Another Facebook user, Amie Ajeng, managed to capture the exact moment in which an airplane appeared to fly right under the rainbow.
A double rainbow was also seen lighting up the sky in Singapore last September.
The phenomenon occurs when light reflects inside raindrops twice, creating a second spectrum of colours across the sky. In Chinese culture, a double rainbow is considered auspicious and a reason for reflection and mediation, The Straits Times wrote.
In February this year, another unusual rainbow, thought to be a rare fire rainbow, caught the eye of residents in the city-state.