shipment

(a)  

in particular

(a)  

regulate

(a)  

solar day

(a)  

successive

(a)  

rotate on

(a)  

axis

(a)  

lunar month

(a)  

orbit

(a)  

accompany

(a)  

revolution

(a)  

equator

(a)  

waxing and waning 

(a)  

conspicuous

(a)  

lower latitudes

(a)  

clime

(a)  

seasonal agriculture

(a)  

practise (practice)

(a)  

crucial

(a)  

activity chart

(a)  

formulate

(a)  

municipal

(a)  

at the rise of 

(a)  

star Sirius

(a)  

span the heavens

(a)  

cosmic significance

(a)  

temporal hours

(a)  

duration

(a)  

spring and autumn equinoxes

(a)  

adopt

(a)  

disseminate

(a)  

remain

(a)  

track

(a)  

indicate

(a)  

the sundial's counterpart

(a)  

denote

(a)  

dip

(a)  

inscribe

(a)  

satisfactorily

(a)  

Mediterranean

(a)  

arose

(a)  

evolve

(a)  

astronomical

(a)  

eventually

(a)  

supersed

(a)  

split

(a)  

commence

(a)  

mechanical clock

(a)  

revolutionary

(a)  

timekeeper

(a)  

motive force

(a)  

gear wheels

(a)  

escapement

(a)  

the coiled spring

(a)  

fusee

(a)  

constant force

(a)  

mainspring

(a)  

pendulum clock

(a)  

arc

(a)  

address

(a)  

anchor

(a)  

rock

(a)  

precise

(a)  

a quartz-crystal clock

(a)  

operation

(a)  

beam down

(a)  

Global Positioning System satellites

(a)  

calibrate

(a)  

instant stock-trading systems

(a)  

integral

(a)  

simultaneous

(a)  

uniform

(a)  

devise

(a)  

chronicle timekeeping

(a)