sorry my maths is terrible 12 hours a day 5 days a week is 60 hours lol. Thats my hours as a live in nanny but i go home at 5.30pm on a friday that was my negotiation for doing 12 hours a day mon to thurs so maybe you could work out something like this with potential nanny?
I also agreed to 2 nigths babysittng but havent had to yet past half an hour where mum/dad been a little late but in the knowing that this (babysitting) can be accrued if my family need me to babysit all week one week... this is ok by me as we have had prior agrrement