I think that the participants in the picture are celebrating Singapore's 30th birthday and the birthday of the participant in the foreground as there are crowds wearing caps with the number 30 printed on it, some are holding Singapore flags and there is a cake hold by the lady with double-chin which I assume that she is celebrating her birthday.
The other two participants who are standing beside her are her family members as they're kissing on her cheeks and the Malay women which is in front her feel happy for her too. I can see that a broad smile is hanging on her face, tell me that she felt fortunate since her birthday falls on the same day as Singapore's birthday.
The weather seems to be hot and warm as there were participants holding umbrellas to shade themselves from the direct sunlight and they were excited of what's going on during the parade.

154 words