The Heavenly Empire
From Sun Time to Clock Time
100

This type of calendar follows the moon cycles.

What is a lunar calendar? 

A few who follow this are Jews and Muslims.

100

The only important time, the only time men could work in ancient history.

What was daylight time?

200

This number is almost everywhere and has special charm all over the world.

What is seven? 

God created the world in 6 days and rested on the 7th.  The Japanese found seven gods of happiness, Rome was set on seven hills, the ancients counted seven wonders of the world, and the medieval Christians enumerated seven deadly sins.

200

Man discovered very early that he could measure the passage of time by this.

What is the amount of water that dripped from a pot? 

These are called water clocks. Within 500 years years after their first sun dials, the ancient Egyptians were using these to measure off hours of night.

300

The days of the week in the Roman Empire were named after these. 

The planets...sun (Sunday), moon (Monday), Mars (Tuesday), Mercury (Wednesday), Jupiter (Thursday), Venus (Friday), Saturn (Saturday).

300

In England, these were placed in coffins as a symbol that life's time had run out. 

What are sandglasses?  

"The sands of time are sinking," went the hymn, "The dawn of heaven breaks."

400

The planetary week was a path into studying this science.

What is astrology? And astrology was a step toward new kinds of prophecy.
400
In China, Japan, and Korea, the use of fire to measure time was used with these.  They produced a pleasing aroma.

What is incense?

The time was indicated by the place within the seal that was reached by the fire.

500

This philosopher dominated the popular and literary view of the universe throughout the Middle Ages.

Who was Ptolemy?

In many ways Ptolemy spoke as a prophet.  For he enlarged the uses of mathematics in the service of science.

500

Seafarers, reaching out into the vast oceans, began to discover how little they knew of the planet, and they had to figure this out to calculate their location and time.

What is longitude?