Days Without Impressive Shadows to Satellite Based Services

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Telkom says phenomena such as a shadowless day are common in satellite-based services. This state-owned company has also anticipated long ago so as not to have a long impact to customers.

“It’s a natural phenomenon that in satellite services is common, so both satellite operators and customers can already anticipate the impact,” said Vice President of Corporate Communication Telkom Arif Prabowo, Wednesday (21/3/2018).

For information, Telkom itself the majority of its service products utilize satellite technology, namely Very Small Aperature Terminal (VSAT).

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“Telkom is concerned about all customer disruptions, so this phenomenon we inform the customer,” he said.

This satellite communication disorder is the occurrence of sun outage, where the positions of the Sun, Earth, and satellites are in parallel positions. At that time, it can not signal because the satellite transmitter is close to the Sun. And, this day without a shadow results from the phenomenon of sun outage.

“Sun outage is when the VSAT antenna leads to the Sun, estimated to be 15 minutes long for eight days, and all Earth stations in Indonesia will be twice a year, March and September,” he said.

“If there will be a sun outage, customers will be informed beforehand,” said Arif Telkom related to the anticipation of natural events.

As is known, Indonesia experienced an interesting natural phenomenon on March 21, 2018. The sun is just above the equator (equator). The incident made Indonesia during the day had no idea.

Not all of Indonesia, but these events take place in certain areas. The sun will be almost directly above the head. This results in no shadow right in the daytime.

“This phenomenon is called a shadowy day or a day without a shadow,” said Head of Public Relations LAPAN Jasyanto.

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LAPAN said that Indonesia experienced two shadowy days this year, on March 21 and September 23, 2018.

This event occurs because the Earth circulates around the Sun at a distance of 150 million kilometers with a period of about 365 days. The Earth’s circular lines are somewhat oval so that the Earth sometimes moves faster and sometimes moves more slowly.

The Earth’s plane is called the ecliptic plane. This field is tilted at 23.4 degrees towards Earth’s equatorial plane. Therefore, the Sun appears over the northern hemisphere for about half a year and is above the southern half of the rest of the world.

“Changes in the visible position of the Sun cause changes in seasons on Earth, such as four seasons in the subtropics and also wet-dry season in the territory of Indonesia,” said Jasyanto.