Surabaya –
The Indonesian sky will be decorated with a rare phenomenon in September 2025, when a total lunar eclipse or Blood Moon can be witnessed from all regions of the country. This event will take place from night to early morning.
Of course this natural phenomenon is a special opportunity for the community to witness the moon to change color to copper red without the help of special tools. Check out the schedule until the process of a total lunar eclipse in September 2025.
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Schedule of the total lunar eclipse September 2025
Table of Contents
2025 became special for night sky lovers. A more special natural performance will occur on September 7, 2025. The total lunar eclipse can be observed from all regions of Indonesia from 22.28 WIB until 03.55 WIB the next day.
According to the Brin Space Research Center, this phenomenon will display a moon that looks dark red during the totality, so that it becomes a rare moment that is a pity to miss. The details of the total lunar eclipse time 7-8 September 2025 are as follows.
- 22.28 WIB: Penumbra Eclipse Begins
- 23.35 WIB: Partial Eclipse Starts
- 01.11 WIB: Total Eclipse Begins, the Moon looks dark red
- 02.33 WIB: Total Eclipse Ends
- 03.39 WIB: Partial Eclipse Ends
- 03.55 WIB: Penumbra Eclipse Completed
Previously, a total lunar eclipse had occurred on March 14, 2025, and could be observed from the Pacific regions, America, Western Europe, to West Africa. At that time, the moon seemed reddish when entering the shadow of the earth, giving a stunning view of the sky.
With the presence of two total lunar eclipses, the 2025 night sky really presents a rare natural attraction. Be sure to prepare a time, bright location of view, and maybe a camera, so that this stunning sky phenomenon can be enjoyed optimally.
What is Blood Moon?
Reported by Space, Blood Moon is a popular designation for a total lunar eclipse. This phenomenon occurs when the earth is right between the sun and the moon, so that sunlight cannot immediately reach the surface of the moon.
Even so, the moon did not become totally dark. Sunlight remains “sneaking” through the earth’s atmosphere, then deflected and up to the moon in the form of red-orange light. This reddish color arises because the Earth’s atmosphere acts like a natural filter.
Blue and green light spread in all directions, while red light actually penetrates and forwarded to the surface of the moon. This process is called rayleigh scattering – the same phenomenon that makes the sky look blue during the day and the sun looks orange when rising or immersing.
Interestingly, the color of blood moon can be different every time it happens. If the atmosphere is full of volcanic dust, smoke, or pollution, the moon will appear dark red or even dark. Conversely, if the atmosphere is clean, the red color will look brighter and softer.
The lunar eclipse is actually not a rare event, because in an average year two to four times. However, not all of them are a total eclipse. Only about a quarter of the entire lunar eclipse that really displays a total phase, or known as Blood Moon.
This phenomenon only appears when the earth, moon, and sun are in a perfect parallel position, coupled with the condition of the supporting moon orbits. That is why not every full moon will turn into Blood Moon.
Interestingly, a total lunar eclipse can be witnessed from anywhere on the surface of the earth that is on the night side, as long as the weather is sunny and not blocked by clouds or light pollution.
The process of a total lunar eclipse
The total lunar eclipse is a natural event that occurs when the moon passes through the core shadow (umbra) of the earth in full. During this phenomenon, the moon appears to fade and even change color to copper red, so it is called Blood Moon. To reach the top of the total eclipse, there are six phases that are passed.
1. Penumbra phase begins
This process begins when the moon enters the penumbra, which is the shadow of the earth. At this stage, the surface of the moon begins to look more gloomy than usual. However, this change is very subtle, so it often escapes the observation of the naked eye. According to BMKG and Brin, this phase marks the start of the lunar eclipse process.
2. Early Eclipse Partly
Furthermore, the moon begins to enter the umbra, which is the darker core of the earth. In this phase, the eclipse began to appear clear because some of the months looked like “bitten” of black shadows. This phenomenon can be seen directly without tools and is the beginning of a partial lunar eclipse (partial).
3. Puncak of total lunar eclipse
When the entire surface of the moon is covered in umbra, the total lunar eclipse reaches its peak. The moon will appear dark red or reddish, because sunlight is deflected by the earth’s atmosphere and only red light reaches the surface of the moon. This color creates a visual effect which is often referred to as Blood Moon.
4. End of Total Eclipse
After its peak, the moon began to come out of the shadow of Umbra. The red color slowly disappears, and looks back like “bitten” from the opposite side. This phase marks the end of a total eclipse, but the eclipse process is partially still ongoing.
5. The end of the eclipse part
When the moon has come out completely from the umbra, but it is still in the penumbra, the eclipse phase is partially ending. The moonlight begins to look normal again, although it may still look rather gloomy for careful observers.
6. End of the Penumbra Phase
Finally, the moon really came out of the shadow of the earth’s penumbra. At this point, the entire surface of the moon returns to bright as usual and the entire lunar eclipse process is complete.
When the eclipse takes place, the constellation of the surrounding stars becomes easier to recognize because the sky tends to be darker. In some cases, planets like Jupiter and Mars also appear to shine brightly in the night sky, adding to the beauty of the eclipse phenomenon.
Types of eclipse of the moon
The lunar eclipse is one of the very interesting natural events to observe. This phenomenon occurs when the moon, earth, and sun are in a straight line. At that time, the earth was in the middle and its shadow fell to the surface of the moon.
As a result, the moon becomes dim, partly covered by shadows, or even looks dark red. But, not all lunar eclipses look the same. There are three types of lunar eclipses, and each has its own characteristics. The following types of lunar eclipses are summarized from the Ministry of Education and Culture.
1. Total Moon Eclipse
This is the most dramatic type of lunar eclipse and most easily seen with the naked eye. The total lunar eclipse occurs when all parts of the moon enters the shadow of the earth’s core, called umbra. At this time, the moon will look dark, and often change color to dark red.
This color arises because the sunlight still penetrates the atmosphere of the earth and is refracted towards the moon, similar to when we see the orange sky at sunset. A total lunar eclipse can only occur if the sun, earth, and the moon are in a perfect straight line.
2. Partial Moon Eclipse (partial)
The lunar eclipse occurs when only a part of the surface of the moon is covered by the shadow of the earth’s core, called the umbra. Meanwhile, other parts are still in the penumbra area, namely the foreign shadow that still receives some of the sunlight.
For this reason, when this eclipse occurs, you can see the moon as if “bitten” on one side-some bright, partly dark. In contrast to the total eclipse that makes the moon look red, the eclipse does not always display the red color.
However, the shadow of the earth that covers part of the moon still looks contrast and clear with the naked eye. This is what makes the lunar eclipse partly interesting to observe, especially if the weather is sunny and not cloudy.
3. Penumbra Moon Eclipse
This is the type of eclipse that is the most soft and difficult to observe, especially without tools. Penumbra lunar eclipse occurs when the moon only passes through the shadow of the earth, namely the penumbra, not its dark shadow (umbra). Because only the outside of the shadow, sunlight still hit the surface of the moon.
But the light is not as bright as usual, so the moon looks a little gloomy or grayish. Many people don’t even realize that there is a penumbra eclipse because the color changes are very thin.
(auh/irb)
