The December 2017 New Moon in Sagittarius occurs at 1:30 AM EST on Monday, December 18th. The Moon then goes void-of-course at 8:10 AM on the same day, so even though the New Moon is technically on the 18th, you will almost certainly observe it before (unless you’re a night owl). The Moon then enters Capricorn at 8:33 AM that same day. The good news is that the Moon is in Sagittarius all day December 16th and 17th, and it enters Sagittarius at 8:07 PM on Friday December 15th, so it will essentially be in Sagittarius for two full days. This gives us plenty of time to work with this New Moon. This information is also detailed in my December 2017 Cosmic Concerns and is listed below.
New Moon December 2017 Timing
- December 15th, Friday: Moon enters Sagittarius 8:07 PM
- December 16th, Saturday: Moon is in Sagittarius all day
- December 17th, Sunday: Moon is in Sagittarius all day
- December 18th, Monday: New Moon at 1:30 AM; Moon void-of-course 8:10 AM, enters Capricorn 8:33 AM
Practically speaking, all this means you can do your New Moon ritual after 8:07 PM on the 15th, or any time on the 16th or 17th (recommended). Remember that this New Moon is also during a Mercury Retrograde, so tread lightly when it comes to putting big plans into action.