Relaxing Vs Busy Working Day

Do you will when will be the most relaxing and busiest days for me in the office? What will I do on that time? Of cause, I am can do nothing except surf internet, chitchat with online and update blog at the relaxing time which normally on medium of the month. Oppositely, I will work like a crazy on the busiest day. I will work without rest; sometimes don't even take my lunch. I have no time for others and I don't want to spend time on that too. The only thing I have to get ready is the Botox for headaches which I will need it anytime on my busiest working day.