I am travelling to the US in February and just want to check my understanding of the time zones is correct.

Please can you confirm that all parts of AZ and UT (on MST) will be one hour ahead of NV (on PST).

I think my confusion has come about because (I think) AZ doesn't change it's clock for daylight savings in April whereas most other states do. This is further compounded by the fact I read that Navajo areas do something different to the rest of AZ.

Thank you!

You are correct. Arizona and Utah are on MST. California and Nevada are on PST.

When the rest of the nation switches to daylight savings time in summer, Arizona (not to confuse the cattle, one supposes) goes its own way. The Navajo Reservation, up in the northeast quarter, goes on daylight savings, but the rest of the state remains on standard time, which is then the same as the time in California, Pacific Daylight. Confusing? Yes.

Got it! Thank you both for your clear replies.

During the winter (So when you come in Feb.) AZ is 1 hour ahead of NV, in the summer we are on the same time.

Another option is just to give up trying to figure out what time it is - we did a driving trip starting in Las Vegas, thru parts of UT, AZ and on to California. We never were really sure what time it was until we hit California, and by then we were so used to being at least an hour off, it didn't matter.

If you want to get confused, go to Indiana.

The Indiana legislature passed a law in April 2005 that the whole state will go on DST this year.

The whole process was not without great debate and one of the arguments against was that changing the clocks would lead to sleep-deprived cows. I guess there must have studies to show that cows who are sleep-deprived have more accidents when driving long distances or operating heavy machinery.;-)

The law also requires the Governor to ask that the Department of Transportation review the boundary between Eastern time and Central time and move some counties if warranted. So, more changes may be coming.

"I guess there must have studies to show that cows who are sleep-deprived have more accidents when driving long distances or operating heavy machinery."

Laugh out loud hilarious!!!

As a resident of Indiana and totally against the time zone change as announced, the reasoning I like the most is that it will give you more daylight hours. HUH? Since when does going to DST add hours to the day? I like it cause it's light in the morning before I go to work. Now it will be dark most of the year going to work. At least they didn't make the split between Elkhart and St. Joseph county. That would have been a total disaster. Just one more reason that Gridlock in any government is a good thing.