Mari,
That is a very long work day.
I hope your day goes well and that you sort out your clothes to suit all the varying temps.. That's the trouble with air-cons.. They're never just right.
I always suggest to my daughter that she keeps a scarf and a light cardigan in her bag in case one of her lecture rooms is too cold. They usually are. I guess it's to keep the students awake or something. She'll sometimes come out shivering and it'll be a perfectly mild day outside.
Scarf, cardigan, coat. I find if my feet and neck are warm then I'm OK.

Hope the day goes well for you.