Sendit discount code timing

Yay a £5 discount to be used at Sendit.com has popped up in my email; oh wait it's save £1 on £10 purchases; £3 on £30, and £5 on £50. Ah and it expires at midnight on the 20th May so it was for "This weekend only". That'd be great except it was sent at 08:37 on the 20th May.

I suppose it could have been worse it could have been sent at 23:59 or much worse 00:01 on the 21st