Cultures throughout history have attempted to date the beginning of the the world in the past, so methods of dating Creation have involved analysing scriptures

Religious text

Religious texts, also known as scripture, scriptures, holy writ, or holy books, are the texts which various religious traditions consider to be sacred, or of central importance to their religious tradition...

 or ancient texts.
The creation myths, traditions and early sources of different ancient cultures put the creation of the world at different dates. Many historical calendars were based on these dates.
The ancient Chinese historian Xu Zheng (220–265 AD) in his Three Five Historic Records dated the creation of the world by Pangu

Pangu

Pangu was the first living being and the creator of all in Chinese mythology.- The Pangu legend:...

 36,000 years (2 x 18,000) before the reign of the legendary Three Sovereigns and Five Emperors.