I'm going to start a new job at company A soon, after two months of unemployment. The work contract says I'm not entitled to ask for days off during the first six months. Besides, within this period there are a couple of days (before/after bank holidays) on which the company is shut down, and for which employees have to take a day off mandatorily.
This job I'm going to start is mostly a better-than-nothing option, which I accepted because life began to be difficult for me. Now I've seen today the one job advertisement from company B I've been waiting for the past weeks. (Literally: from a friend working there I knew it would come some day, but he couldn't tell when.) This job would be much better for me than the one I'm about to start, and I guess I'd also fit very well to the job profile. So I'm pretty confident I'd be invited for an interview if I apply, and I am very tempted to apply. After interview, I guess I have a 30% - 50% chance of being hired. (Company B is in the public sector, so the have to respect equal opportunities regulations which don't benefit me personally.)
My question is: How can I go to an interview at company B when I can't ask for a day off at company A?