Ebay Time ?

[Big Ben]

I ran into something tonight that I found interesting and I can not find an answer to this. I was watching an auction on Ebay while I was working out on my treadmill. I had my laptop on the auction and monitored the auction on my iPhone while on the treadmill using the Ebay app for iPhone. My intent was to bid on the auction using my laptop. While I was working out, I noticed that there was a 5 minute difference between the ending time of the auction on my iPhone compared to the ending time on my laptop. I quit working out and entered a bid with 10 seconds remaining on my iPhone. The auction registered as "ended" on my iphone while the time on my laptop registered five minutes remaining on the auction with my ending bid I registered on my iPhone being the top bid on the laptop version. I ended up loosing the auction as someone snipped me in the final seconds. Loosing the auction is not a big deal to me, but I was wondering if anyone has run into this time difference. --HG Wells Time Machine and Stephen Hawking jokes on the way I am sure--

Thanks

Ben