View Full Version : Transit times

2004-Jun-07, 10:30 AM
Does anyone know the start and finish of the transit time for the eastern side.I am in Montreal Canada

2004-Jun-07, 11:11 AM
Here is a table from NASA for world cities:


And this is for American cities:


The time is Universal time (GMT).

2004-Jun-07, 11:49 AM
Thanks Tranqility but how do you read that thing...Sorry

2004-Jun-07, 11:59 AM
This is Space.com's explanation of the table:

"The event is discussed in Universal Time and must be adjusted for local timekeeping. (Example: 11:05 UTC minus 4 hours equals 7:05 EDT). The times are listed in hours:minutes:seconds format (example: 11:05:54). The table shows two ingress times (when Venus touches the Sun's limb and then is fully in front of the Sun) and two egress times (when it begins and finishes leaving the disk). Alt=Altitude, in degrees above the horizon (10 degrees is about the width of your fist on an outstretched arm)."

This page (http://www.space.com/scienceastronomy/venus_transit_2004.html) is very helpful.

2004-Jun-07, 12:03 PM
So 7:05 eastern is when it starts or finishes

2004-Jun-07, 12:15 PM
Its when you can start seeing it in Montreal. For you it lasts around 20 mins.

2004-Jun-07, 12:40 PM
20 min so that means its finishing at around 7:30

2004-Jun-07, 12:45 PM
7:25 EDT actually. Thats what it says in the table.

2004-Jun-07, 12:46 PM
Actually, 7:05 is when Venus starts to exit the solar disk. You can start observing it at sunrise. Venus will be entirely out of the disk at 7:25.

2004-Jun-07, 12:46 PM
SO how long does the whole thing last

2004-Jun-07, 12:53 PM
At the place where it takes the longest time its a little after 5 am GMT to after 11 am GMT. So almost 6.5 hours.

2004-Jun-07, 01:45 PM
Here's (http://www.nightskymag.com/venus_transit.html) a table that's easier to read.

Basically for you it will be:

5:06 am - Sun rises with transit in progress
7:05 am - Venus starts to exit Sun's disk
7:25 am - Venus finishes exiting Sun's disk

Set your alarm early!