Aptitude : Calender

(1) It was Tuesday on Jan 1, 2010. What was the day of the week on Jan 1, 2014?

• (a)Friday
• (b)Sunday
• (c)Thursday
• (d)Saturday

Answer

Correct Answer : (a) Friday
January 1, 2010 is Tuesday.
There are 4 ordinary years between 2010 and 2014. An ordinary year has 1 odd day.
There is 1 leap year between 2010 and 2014. A leap year has 2 odd days.
Therefore, there are a total of 5 odd days between 2010 and 2014.
When you add 5 odd days to Tuesday, you get Friday.
Therefore, the day of the week on January 1, 2014 is Friday.

(2) What was the day of the week on 20th July, 1995?

• (a)Sunday
• (b)Tuesday
• (c)Thursday
• (d)Saturday

Answer

Correct Answer : (c) Thursday
The day of the week on July 20, 1995 is Thursday.

(3) If 7th September, 2020 is Monday, what was the day of the week on 7th September, 2019?

• (a)Thursday
• (b)Sunday
• (c)Tuesday
• (d)Saturday

Answer

Correct Answer : (b) Sunday
Going back from Sep 7, 2020 to Sep 7, 2019, there are no leap years, so it’s exactly 365 days.
This is 52 weeks and 1 day, which is 1 day before Monday.
So the day was Sunday

(4) On 16th March, 2011 it was Wednesday. What was the day of the week on 16th March, 2010?

• (a)Tuesday
• (b)Sunday
• (c)Tuesday
• (d)Thursday

Answer

Correct Answer : (c) Tuesday
Going back from Mar 16, 2011 to Mar 16, 2010, there are no leap years, so it’s exactly 365 days.
This is 52 weeks and 1 day, which is 1 day before Wednesday, so the day was Tuesday.

(5) On 19th November, 2006 Sunday falls. What day of the week was it on 19th November, 2005?

• (a)Saturday
• (b)Sunday
• (c)Wednesday
• (d)Monday

Answer

Correct Answer : (a) Saturday
Going back from Nov 19, 2006 to Nov 19, 2005, there are no leap years, so it’s exactly 365 days. This is 52 weeks and 1 day, which is 1 day before Sunday, so the day was Saturday.