Keep checking, and I mean at least every half hour. There is a 1 day online cancellation cutoff, so you are in the sweet spot to grab a 8/26 slot. Tough when only a single opens up, but sometimes families cancel. I speak from recent experience as I had my interview at Champlain a few days ago and got the appt 2 days before.

Congrats. 70 days to very typical at this point for conditional approval. I had thought that they might return to the old 2-3 week window from earlier this year, but that does not appear to be happening yet. If you are bored, check out the time frames in the corresponding Global Entry thread. People are getting conditional approvals in 1-2 weeks, but open appointment blocks are not until 2017 at many locations. As always, thank you for contributing your experiences to this thread.

I am keep trying but no luck so far. I booked 17th september (upon my return from New Zealand) at Fort Erie. However, I would love to get something at YYZ or Niagara falls tomorrow or on Friday :)

Update: I got 27th Aug interview appointment (rescheduled from 17th September) at 11 am at yyz. My flight is at 5:15 pm so I will check if somehow I can get 2 pm appointment.

I checked when I flew into yul on my application (had lots of time). Canada side approved it and it's pending on the usa side. Called up my local GE office and left them a message. Figured it wouldn't hurt. After next week, I won't be in Canada until Dec, so hopefully it'll get approved soon.
At worse I'll take a road trip to Detroit.
What's the maximum time one can wait after approval to schedule a appointment?

My wife received her approval at 11:09 this morning.
The kids and I had our interviews today at 4:00 & 4:30 @ Fort Erie. My wife joined us. Unfortunately they could not take her, as they were backed up today.
We arrived at about 3:15, left by 4:15.
They said card should be in the mail in about 10 days. A little waiting, but pretty seamless.

All approved, now waiting for cards
 

Applied May 31, conditional approval Aug 13, and interview times were wide open in Pembina and Warroad. All 5 of us inteviewed today, took maybe 30 minutes, couldn't get fingerprints for 4YO and finally gave up. Was told that is common for little kids. The machine just wouldn't register them. Now we wait for the cards! Good luck to everyone.

EDIT: forgot to mention I needed nothing but our passports. I brought the letters, birth certificates for the kids and drivers licenses but they didn't look at anything except passports.

You must schedule an appointment within thirty days, but there's no cost or penalty to change it, so there's no reason to ever wait. At worst you'll have the appointment you picked first, at best you'll see a dropout and get a next day appointment

Schedule it out and keep movinhmg it back until it's convenient for you.

Quick approval post interview
 

I was one of the mid-May (2016) applicants to NEXUS who, in spite of already having Global Entry, experienced a pretty long wait (> 11 weeks) until receiving my conditional approval. Today, I had my interview and iris-scan in Vancouver (downtown) and was delighted to receive an email, just 30-45 minutes later, to my GOES account to inform me of my final approval.

<off topic discussion of GE card validity post NEXUS approval was moved to the The NEXUS Information Thread>

Joined just to provide an additional data point
Applied 6/12
Conditional Approval 8/28
Interview for 9/6. I could have grabbed one for the 31st but this works better for my schedule

Time Line
 

Family of 4.

Date applied: 6-24-16 x 3 members. 6-25-16 X 1.

Conditional approval: 10.15 PM eastern time on 8-28-16 for one family member, applied on 6-24-16.

Waiting for 3 others.

Update:
Family of 4.

Date applied: 6-24-16 x 3 members. 6-25-16 X 1.

Conditional approval: 10.15 PM eastern time on 8-28-16 for two family members, applied on 6-24-16.

Waiting for 2 others.

Nice burst of conditional approvals, thanks all for your updates, should start seeing some July approvals next week.

Thanks! Encouraged.
 

This is encouraging. I applied on 6/25, status is still pending review.

I've got a trip coming up on Sept 18 and another in Oct. Woukd be fantastic to get this all set by then.