From which line of longitude the South Africa calculate its time​

i think its 20 west 60 line longitude icant calculate it sry but i can follow you in to the hehe

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.