Number + 点
八点 (bā diǎn) means 'eight o'clock' in Chinese. Clock times are formed by placing a number before 点 (diǎn), which functions like "o'clock." This pattern applies to all hours of the day.
我每天早上八点出门上班。
Wǒ měitiān zǎoshang bā diǎn chūmén shàngbān.
I leave the house at eight every morning to go to work.
电影八点开始,我们快走吧。
Diànyǐng bā diǎn kāishǐ, wǒmen kuài zǒu ba.
The movie starts at eight — let's hurry.
他八点就到公司了,真勤快。
Tā bā diǎn jiù dào gōngsī le, zhēn qínkuài.
He arrived at the office at eight — so diligent.