Timing Belt for Honda Civic 05 should be changed at 80,000 Kilometers. Not only the timing belt, but there is also a bearing which needs to be changed along with the timing belt. Honda people call this service as "Eighty".
"Eighty karo yar civic ki".
Also on this 80K service, they will change almost all the fluids in the car. (Dont have idea about the automatic transmission, but for the manual they do change the oil).
After the change of timing belt, another important thing is the Tapets adjustment, which they normally do.