The July 2017 New Moon in Leo occurs at 5:46 AM EST on Sunday July 23rd, and your New Moon ritual can be done anytime after 5:46 AM on the 23rd and all day Monday the 24th.
On Sunday the 25th the Moon goes void-of-course at 2:44 PM then enters Leo at 6:06 PM, but your New Moon ritual should be performed before then, ideally. A lot of other planets are in Cancer for this Moon as well, so expect a big wave a Cancer energy coming.
New Moons are used for setting intentions with a manifestation point at the next Full Moon which happens in about two weeks, August 7th for this New Moon. Also, and way more importantly, there is a second, larger manifestation at the Full Moon that happens around six months later in the same sign. For this New Moon its six month Full Moon will happen on January 31st 2018.
My guide, Witch’s Guide to New Moon Magick, can be found on the site here; this post is a companion to that guide. If you’re new to Moon magick that’s a great place to begin.
For all the cosmic witches out there, or just witches and pagans who are interested in what’s going on in the cosmos, here is a list of July 2017’s important astrological events. All times listed are in EST (Eastern Standard) and should be adjusted for your own time zone. Please note that this list is not even close to being exhaustive, but compiled by me to list events that would be of magickal importance. This information is great to copy into your Book of Shadows if you maintain one; if you are looking for something more extensive my guide to lunar trackers is on the site here. I hope that you find it helpful.
Planetary Movement, July
4th: Venus enters Gemini 8:11 PM
5th: Mercury enters Leo 8:20 PM
20th: Mars enters Leo 8:19 AM
22nd: Sun enters Leo 11:15 AM
25th: Mercury enters Virgo 7:41 PM
31st: Venus enters Cancer 10:54 AM
Moon Cycle, July
7th: Moon void-of-course 10:12 AM, enters Capricorn 1:45 PM
9th: Full Moon in Capricorn 12:07 AM; void-of-course 10:12 PM
23rd: Moon void-of-course 2:05 AM, enters Leo 4:34 AM, New Moon in Leo 5:46 AM
25th: Moon void-of-course 5:22 AM, enters Virgo 6:32 AM