The F1 Singapore Grand Prix is held in the evening because to satisfy the European audience ,which is a big territory for F1 (so the race would be broadcasted live in the afternoon through out Europe) and also Bernie Ecclestone wants to experiment with evening races with the potential to add more evening races in the future, Australian GP for an example.
There are numerous reasons:
a. Singapore is a great country
b. It is a highly popular tourist attraction
c. It has the infrastructure and financial capabilities to host a F1 race
d. The F1 races are not held in many Asian nations and the F1 administration wanted to expand into Asia and Singapore was one of the best choices for them
Formula One race cars
A Formula One race is called a grand prix.
Only one driver can take pole for a particular Formula One race
The iggest race in Australia is the Formula one race
1983
The winner of the 2011 Formula One race in India was Sebastian Vettel.
Sebastian Vettel
The second formula one race ever was held in Monaco on May 21st 1950.
Yes
Yes, it is one of the stepping stones up to Formula 1
Lewis Hamilton
Sebastian Vettel