No, there is nothing at all to worry about. Nothing astronomical of any significance at all happens on that date. The only thing that happens is actually an absence of anything interesting - the visible planets are all briefly so close to the sun that they can’t be seen easily.

Short summary - planetary alignments can be a pretty sight in the night sky. But they are of no astronomical significance and can’t harm us in any way at all. This particular alignment is an alignment with the sun as well, which means that there is not even anything to see. It’s rather an absence of anything interesting for astronomers who like to observe planets.

The book of Revelation is meant a a message of hope, not despair. It’s so enigmatic though, that you can fit almost any message to it and claim that’s what it is saying. The Bible is not noted for its astronomy, and they didn’t even know that meteorites came from space, thought comets were like high clouds, and they didn’t know that Earth orbited the Sun so didn’t know it was a planet. It doesn’t even have eclipse predictions in it, although a few astronomers at the time could do them (though not nearly as accurately as us). It’s just not a work of astronomy at all. It has much to say in other ways that many people find of great value, but to look to the Bible for a guide to astronomy is to look in the wrong place I think.

DETAILS

There is a very rough alignment with the planets and the Moon spread out over the sky from Leo to Libra. However, there will be nothing to see in the sky because the sun is right in the middle. It's a non event visually, most interesting as one of the few times when you won't see any of the planets or the Moon.

Amateur astronomers like alignments though they have no astronomical significance, just because they look interesting and they can get nice pictures of them. This is the most uninteresting sky you could possibly have if you are interested in visual alignments.

As for the idea of it being a “sign” - this is just a work of imagination and numerology. His page is here: Signs of the End. It spins a story out of the book of Revelations, which is notorious for having so many enigmatic statements in it that you can interpret to mean almost anything.

There are many different ideas on what it actually meant - was a late addition to the Bible. Views about it include:

• Perhaps it describes events that happened already in the first century AD.
• Perhaps it is about how to lead our lives and the events described have no location in time or space.
• Perhaps it does describe future events.

If you aren’t a Christian then you don’t need to interpret it at all. After all, it was written specifically for Christians.

It is generally agreed it is meant as a message of hope, so if you find it scary, something has gone wrong. The Eastern Orthodox church has gone so far as to exclude it from its lectionary - passages that can be read from the pulpit, because it is so easily misunderstood.

There’s nothing of any astronomical significance on that date. Yes, all the brighter planets are hidden in the bright area around the sun in the sky, so won’t be visible. That’s all. Here is a screenshot

Charts of the Night Sky - shows how all the main visible planets will be hidden in the bright area of the sky around the Sun briefly on 23rd September 2017.

It has no meaning at all. Unless you think you can read signs in the sky like reading signs in tea leaves. It’s not even a pretty sight to look out for in the night sky. It’s rather an absence of anything of interest as you won’t be able to see it because the sun blots it out.

They have just made up a story around the stars and the planets. The constellations themselves are just patterns of stars as seen from Earth. The stars are constantly moving. They are at different distances from us.

This shows how the big dipper is changing:

And this is Orion

More examples here: The fault in our stars: Why the Big Dipper could become the Big Duck

Most of the constellations are not made up of stars that are close together in space either. Look at the constellation from a slightly different angle, if we could travel away from the Sun and it would look different again.

“A scientific visualization of the Orion constellation as viewed from a three dimensional perspective. The true space distribution of the constellation is revealed by circling around the stars.

“The camera begins with a pan across the sky to Orion. The lines of the stick figure constellation are drawn in, which unfortunately gives the viewer an impression of a 2D drawing. As the camera slowly begins to circle around the centroid of the stars, the stick figure quickly breaks into a long extended 3D structure. The camera backs up to keep the entire figure onscreen for the complete circle. At the end of the circle, the camera pushes forward to finish back at the location of the Earth/Sun.

“Note that the stars are rendered with 3D distance dimming relative to the camera position. Stars get brighter or fainter as they are closer or farther from the camera viewpoint. Also, to avoid an obvious distraction, the Sun is not included in the visualization.”

The planets are much closer to us than any of the stars. To say that Jupiter is “in Virgo” is like pointing at a distant mountain and saying your finger is in the mountain. It just means that your finger is between your eyes and the mountain.

It’s like looking at a cloudy sky and seeing clouds that look like fortresses or houses, or boats or animals - and then making up a story about it. Google’s “Deep Dream” generator can turn clouds into images of various creatures:

Inceptionism: Going Deeper into Neural Networks

That could be a fun thing to do but the clouds are not affected by your story in any way. In the same way making up stories about the stars and planets makes no difference to the stars or planets and doesn’t mean that they endanger us in any way at all.

Planetary alignments are very common. For instance there was one early this year with all five visible planets Five planets align: how to see this spectacular celestial show. They are of no astronomical significance but amateur astronomers enjoy watching them.

This is about Muslim views on the Bible Books of Revelation - for them the “Book of Revelation” is not one of their “Books of Revelation”. Islamic view of the Christian Bible. And it’s obviously not a Jewish sacred text. And for any other religion, well they don’t accept the Bible as a sacred text at all, not for themselves, just for Christians, so why should they pay any attention to it?

The book of Revelation, it's a notoriously enigmatic book and you can fit almost any "prediction" you like to it, and many Christians don't think it was meant to predict the future, and others think it was meant as a warning of events that happened already in the first century BC. Whatever the truth of that, at any rate there’s a huge problem of false prophets in modern Christianity, with the Bible itself warning about them, and numerous false prophecies for the last 2000 years of the end of the world. The Eastern Orthodox church has gone so far as to exclude Revelations from its "lectionary" - passages of the Bible that can be read from the pulpit

If you are Christian, then Revelations should be a message of hope, not fear and despair. If you aren't Christian, there is no need to try to interpret it at all as it is written for Christians. Not even Jews or Muslims accept Revelations as a sacred book.

And the Bible is not noted for its astronomical predictions. Remember that back then, they didn’t know that meteorites came from deep space but thought they came from volcanoes or stones picked up by strong winds. They thought that comets were atmospheric phenomena like high clouds. They didn’t know that Earth orbited the Sun, so they didn’t know it was a planet.

The Bible doesn’t even have predictions of eclipses in it, or anything astronomical at all, as far as I know. It’s just not an astronomical prediction book. There are ancient texts that do, not nearly as good as modern predictions but good for their time. But this is simply not the Bible’s strong point.

See also Debunked - The world will end because the Bible (or some other sacred book) says so - which goes into more details about Revelations.

This is a copy of my Debunked - an alignment of the visible planets behind the sun on 23rd September 2017 is a sign of the end of the world