Notes: 1977 is a common year (not a leap year) and therefore consists of 365 days.

Use the knuckle mnemonic to get the number of days for each month.

• A year is the orbital period of the Earth moving in its orbit around the Sun.


• Knuckles are the joints of the fingers.


• A joint is the location at which two or more bones make contact.


• Art(iculation) is the state of being jointed.

See the glossary below for more prerequisite knowledge.