Question

how is the standard time of a place determined

Answer 1

If you mean how is Greenwich time determined…

To oversimplify a bit, there are two kinds of Greenwich time. One is UTC, which is kept by atomic clocks. The other is determined by the passage of the stars above the turning earth. Once you figure out what sidereal time is at the moment, the conversion to mean solar time is simple.

So two time systems, which naturally don’t line up perfectly — the earth doesn’t match the atomic clocks perfectly. We want UTC to stay close to earth time, so when it creeps ahead a half-second or so they announce: at the end of the year UTC will have a leap second — we’ll stop the UTC clock for one second — to allow earth time to move just ahead of UTC. There have been 30+ leap seconds since that system started in 1972.

Answer 2

Answer:

1)τнє ℓσcαℓ τiмє ατ τнє ℓσทgiτυ∂є ραssiทg

τнrσυgн τнє мi∂∂ℓє σƒ α cσυทτry / ρℓαcє is gєทєrαℓℓy

cσทsi∂єrє∂ αs α sταท∂αr∂ τiмє σƒ τнατ cσυทτry / ρℓαcє

2) iƒ τнє ∂iƒƒєrєทcє вєτωєєท τнє ℓσcαℓ τiмє ατ τнє

єxτrємє єαsτ αท∂ ωєsτ ℓσทgiτυ∂є ραssiทg τнrσυgн α

cσυทτry is ℓєss τнαท σทє σr τωσ нσυrs, σทє sταท∂αr∂

τiмє is cσทsi∂єrє∂ ƒσr α cσυทτry. τнυs, τнєrє єxisτs

σทℓy σทє sταท∂αr∂ τiмє iท α cσυทτry нαviทg

cσмραrατivєℓy ℓєss ℓσทgiτυ∂iทαℓ (єαsτ-ωєsτ) єxτєทτ.

3) iƒ τнє ∂iƒƒєrєทcє вєτωєєท τнє ℓσcαℓ τiмє ατ τнє

єxτrємє єαsτ αท∂ ωєsτ ℓσทgiτυ∂є ραssiทg τнrσυgн α

cσυทτry is мσrє τнαท σทє σr τωσ нσυrs, мσrє τнαท

σทє sταท∂αr∂ τiмє ʑσทєs αrє cσทsi∂єrє∂ ƒσr α

cσυทτry. τнυs, τнєrє єxisτs мσrє τнαท σทє sταท∂αr∂

τiмє ʑσทєs iท α cσυทτry нαviทg cσмραrατivєℓy мσrє

ℓσทgiτυ∂iทαℓ (єαsτ-ωєsτ) єxτєทτ.