It's Monday!

When David said we were to create our blogs and write about what we have learned this week, I realised it was only Monday. For about 5 hours, I was convinved that it was Tuesday. So today I learned that it is Tuesday. I should have known this because it's Halloween. Talking of Halloween, I saw in Saturday's Herald (had to get that in there to prove in some way that I am semi-cultured and educated even though I don't know my days of the week) that a columnist had typed "Hallowe'en". This seems to be the general spelling because it's Hallow's Eve. But if I was to do a class display in a school saying "Our Halloween Masks", I wouldn't spell it with an apostrophe; any thoughts? Which is strange, cos I'm quite funny about grammar and spelling and things.