Student: Good morning, Sir.
Teacher: Good morning. How are you?
Student: I am fine. Thank you, sir. How are you?
Teacher: I am also fine. Thank you.
Student: Sir, would you please tell me how to use a calendar?
Teacher: Of course. Look at the calendar. What do you see?
Student: Names of months and days.
Teacher: Nothing else?
Student: There are dates also. Some are black colour and some are red colour.
Teacher: You have almost learnt. The dates and days tell you what date is in which day.
Student: Colour of dates?
Teacher: The red colours are holy days and the black colours are working days.
Student: Thank you, sir.
Teacher: No mention.