What time does the Asian session open for San Francisco?

I live in San Francisco and want to trade the open of the Asian session but two sites that show FX market hours show different opening hours. Both sites display a real-time clock which I'm matching to my clock to figure out the session open and I'm confused.

It's currently 2:06pm here in SF.

On the Oanda site I need to set it to gmt -7 for their clock to display the same time as my clock. Which means the Asian session starts at 5pm my time.
http://fxtrade.oanda.com/resources/fxmarkethours/


However, at the following site I have to set the gmt to -8 to have their clock match mine, which means the Asian session starts at 4pm my time.
http://www.forexmarkethours.com./

Which is correct?

Two possibilities:

1. One of the sites doesn't respect your (San Francisco's) DST. Currently DST is on in your area, so 9:00 in Tokyo is 17:00 in SF.

2. They use different definitions of "Asian session". Maybe the second one is using the opening time of some other city's stock exchange for that purpose.

As long as you have your forex factory time setting correct for you, go to the front page, and on the top left hand side you will see the session times and how far away they are from opening in your time zone. I have my profile set to GMT +1 (british summer time) which is what is in the image below, yours will show your time zone. Click on the different sessions to see the information. So that should make it easy for you.