Hi mga Mamsh, ask lng po when is the best time to have an ultrasound for gender? First time mom here

in my experience 4-5mon kita ang gender depende sa posistion, in other country routine check up they do ultrasound lagi, sa antin sa pinas my bayad kaya para one time ultrasound 5 mon nila ginagawa, then 7-8 mon para malaman if nakaposistion na din si baby.