Which of the following entity is regulated by

If the sixth day of a month is four day earlier than Monday what day will it be eighteenth day of month?

What will be the angle formed between the hour needle and minute needle of a clock at 09hrs.23min. in clockwise direction from minute hand?

The mirror image of a clock shows a time of 12:31. Then what is the time shown in the clock?

If the sixth day of a month is four days before Monday, then which day will be the eighteenth day of month?

Today is Thursday. After 52 days, it will be?

What is the angle between the hour hand and minute hand (when taken in anti-clockwise direction from the minute hand) at 2:30hrs? 

If it was Wednesday on 26th January 2007, then what was the day on 15th August 2007? 

At what time between 8 and 11 o’clock will the hands of a watch be together?

At what time between 3:30 and 4 will hands of a clock be at the right angles?