The New Moon on October 3rd will also be a solar eclipse. Solar eclipses usually only happen twice a year and they can be powerful influencers if they aspect an important point in your astrology chart.
This conjunction of the Sun and Moon takes place in ten degrees of Libra (10.19 to be exact).
If you have personal planets aspecting this New Moon you could feel the influence quite strongly for weeks before and a few weeks after October 3rd.
In her excellent book, Predictive Astrology: The Eagle and the Lark, Bernadette Brady notes that this New Moon is # 7 South of the Saros Series of solar eclipses. It is an eclipse with "immense power, anger and force...The individual experiencing this series will find that huge obstacles will suddenly and easily clear or, on the negative side, a pending potential crisis will suddenly manifest and move through his or her life very rapidly. Either way the individual will feel that everything is moving at great speed."
Where is ten degrees Libra in your chart? What house and area of your life does it represent? What aspects does this eclipse make to the planets in your birth chart? Answers to these questions should give you some clues as to how and even if you will feel the influence of this eclipse in your personal life.
See also a detailed description of this New Moon here.