Please can somebody tell me if there's a way of checking what date your ESTA expires? I've managed to mislay the PIN and reference details I got when I applied for my last one. I know it expires in the middle of a USA trip, but as it only needs to be valid on arrival date, that won't matter.
However, I'm also under the impression you can renew it a week or so before it expires so wondered whether I should do that as soon as I can. To do so means I need to know the expiry date! I'm looking to do so before the first trip, if possible as it looks like I may have back to back trips, and it would be just one less thing to have to remember to do in the few short days between trips!