Beer day is the day of the week where you go out with the guys from work. More often than not it’s Friday afternoon. The Beer oClock extension for Firefox puts a little reminder about that special time of the week in the Firefox status bar. Not the usual “x days y hours till Beer Day” but funny ones like 3500 lines of code ’til beer o’clock” or 10 ridiculous questions from clients ’til beer o’clock”.
Every operating system comes with a calculator that provides access to basic arithmetic functions and probably some additional ones like base conversions and some functions of a scientific calculator. They usually do lack some features like a history function in combination with an option to use results from history for new calculations.