Один раз в год наступают сутки, когда день на 40 мин длиннее ночи. Сколько времени длится ночь в эти сутки?

Teacher asked the pupil to tell him a few words about the climate of Australia.
Mother told Ben not to be so curious.
Mr. Green told Ann to continue her English study.
Tim told Nick to look at the curtain because it was raising.
Bob said that his mother used to travel much.
Ben said that the snow was six meters deep.
Nelly said that her mother often bought fresh vegetables.
Teacher said that the explorers had gone into the jungle.
Teacher said that people had hunted and killed many tigers in India.
Teacher said that many animals and birds were in danger.