I call this the Singapore Sakura because the pink flowers and red new leaf flushes remind me of the cherry blossom and are the main appeal of this deciduous tree. The flowers look fake but they are all real and attracted the day-flying moth to it.
The flowering is not synchronous in that not all trees within the same vicinity flower at the same time. These few trees at the Pasir Panjang Road entrance are often chlorotic but it seemed like the more chlorotic they were, the more frequent it flowers. Is it possible that the stress triggered off the flowering? Typically before flowering, the leaves are shed and when the new red leaves are out, the flower buds appear too.