3/20/2009 at 11:47 UCT.
Subtract 7 hours for Pacific Daylight Time, so 04:47 PDT.
September 22, 2009 5:18 PM Eastern, 2:18 PM Pacific is the Autumnal Equinox 2009
That is depending on what you regard as the autumnal equinox. The autumnal equinox in the northern hemisphere is in September and it marks the start of autumn. In the southern hemisphere the autumnal equinox is in March and it marks the start of autumn. So looking at in that way, you can say yes. Of course those are two different dates on the calendar, so the autumnal equinox in one is happening at the same time as the spring equinox in the other. It is the same equinox, but where on Earth you are, determines which equinox it is. As autumn starts in one hemisphere, spring is starting in the other. So on that basis they don't mark the start of autumn in both hemispheres. It is never the same season in both hemispheres.
The autumnal equinox in Eastern Standard Time typically occurs around September 22nd or 23rd each year. The exact time can vary, but it usually falls between 3:00 PM and 4:00 PM EST.
The autumnal equinox.
On March 20 for the Northern Hemisphere (this is the autumnal equinox in the Southern Hemisphere). The vernal equinox for the Southern Hemisphere will be either September 22 or 23.
September 22
The autumnal equinox is also known as the fall equinox and the September equinox. An example of a sentence using "autumnal equinox" is "This year's autumnal equinox falls on a full moon. "
The "autumnal equinox" is a single point in time, not a period. In 2015, the autumnal equinox will happen at 08:20 (UT) on the 23rd September.
Google it. Or read what I have wrote: An Autumnal equinox occurs on September 2. It is a day when the day time approximately equals night time.
In 2011, the Autumnal Equinox begins on September 23rd.
Autumnal EquinoxAccording to the U.S. Naval Observatory, the Autumnal Equinox is at 5:18 pm EDT, September 22, 2009. (This is the equivalent of 14:18 PDT, or 21:18 UTC.) September 22nd at 2:18pm Pacific Standard Time.September 22nd at 5:18p.m Eastern Standard Time
In the Northern hemisphere, daylight hours decrease after the autumnal equinox.
September 22, 2009 5:18 PM Eastern, 2:18 PM Pacific is the Autumnal Equinox 2009
September 22
For a vernal equinox, it occurs is March 20th. For an autumnal equinox, it occurs September 22nd.
Autumnal Equinox was 23. September in 1978
It used to be called "The First Point of Aries", because it was located just inside the constellation Aries. However, due to precession the 'point' shifts over time.