For wow player, Tuesday night is other-thing-than-wow day, coz server maintenance normally commence on Tuesday night Malaysia time, either start from 7pm / 9pm - Midnight 1am / 3am / 5am . Normally from 6 - 8hr per maintenance.

It would be announced in Blizzard forum the day before maintenance day and also your in game login screen on that day itself.

If your gf / bf only free to meet you on Tuesday night, then high chance that she / he = wow player =)