Disneyland Passes

Annual passes are good for a whole year (minus any block out dates if that is applicable). If you are getting a pass that has block out dates the first day you use it does not count as a block out date. :) It even says so on the Disney website. You are going to get them at a great time with the opening of cars land in 2 months! Have fun! I am actually going to the park today. :)

One year exactly from the day you purchase them.

Assuming you are talking about annual passes.
They are good for one year from your first visit. So if you use them to go to the park today then they are good for one year from today.
They are not valid until you first use them at the gate. So if you buy them online before your trip they are not valid yet and the year does not begin until you go to the parks and activate them.
There is a certain time frame in which you need to redeem your online voucher but I do not know exactly what that is.
Here is the Disneyland page that has all the information you may need.
http://disneyland.disney.go.com/passes/today/
We have had annual passes for years and love having them!

It depends on the type of ticket you purchase, but yes they do have expiration dates on them. Usually it is within a year of purchase but you will need to confirm before you buy as depending on if it is a special deal or not the terms could change.

1 year exactly, expires the following year on the day you bought them.

We have them and love them and go all the time!

Katrina A is exactly right. They are good for one year from the day you first use it to go through the gate. So you can buy it online in advance to save yourself time the day you actually go to the park, but your year doesn't start until you first use it. There is a limit on how soon you have to redeem it once you've paid online.

Also, pay attention to blackout dates if you're buying a lower level pass. You probably can't redeem it for first use on a blackout day without paying a higher price. With summer approaching, the cheaper passes have a lot more blackout days.

We just got ours yesterday. They are good for one year EXACTLY from the day you get them.

Since you are a So Cal resident, there are 2 special passes (with blackout dates) that are only available for So Cal residents. The Southern California (215 available days to use them) and the Southern California Select (170 available days to use them) - we went with the Southern California because we needed to be able to go on Sundays off-peak. The Select blacks out all weekends (Sat and Sun) which doesn't work because our kids are in elementary school.
http://disneyland.disney.go.com/tickets/

HERE IS THE TRICK: You can upgrade any ticket to an annual pass and the money you spent on the original ticket is applied to the annual pass. But, do not do the upgrade until the END of your trip. For example, if you buy a 3 day park hopper ($144 per person for So Cal right now), on the very last day, upgrade your ticket to the pass you want, and only pay the difference. If you upgrade on the first day, the blackout days will apply the next time you try to use them (so your 2nd and 3rd day are blacked out). If you wait until the LAST day, you can still use your tickets even if the pass you are upgrading too was blacked out all 3 days of your trip. Does that make sense?

For example, we just went this past weekend (Sat and Sun)..... we had 4 x 2 day park hoppers at $114 each person. BOTH of those days would have been blacked out with the SoCal Select pass, and Sat would have been blacked out with the SoCal pass. We enjoyed both days at the park, then on Sun evening we did our upgrade. They gave us our cards (annual passes) and an extra print out that basically said "if today is blacked out with this pass, the person can still use it for the duration of the day/night."

Practically the entire summer is blacked out with both of the SoCal annual passes, so this is away around the blackouts if you want to go this summer at all! Just don't forget to upgrade on the last day of your ticket!

ANNUAL passes are good for a year. Promise, wouldn't steer you wrong. We have had them since my daughter was old enough that she she wasn't free any more.

I don't know about Disneyland but Disneyworld is 1 full year. We purchased season passes may 9, 2011 and they're up for renewal May 9, 2012.

Blessings!
L.

They're good for 12 months from the time of purchase. There's different kinds of annual passes, though - check the Disney website for details.

I would think that Disneyland is like Disney World so you have to pay extra to have then never expire, if not they will expire within 30 days or so. An annual pass is goor for one year without an extra fee.

Call their customer service and ask them or check the web-site.

IDK. But do not take mom's word as true when you can simply call the park or look it up online, print it out and have your legal backup.