Clock and Calendar: SSC CGL Practice Questions

Ans: A

Explanation: First, determine the number of days between April 2nd and October 28th.
April has 30 days. Days remaining in April: 30 – 2 = 28 days.
May has 31 days.
June has 30 days.
July has 31 days.
August has 31 days.
September has 30 days.
Days in October: 28 days.
Total days = 28 + 31 + 30 + 31 + 31 + 30 + 28 = 209 days.
Now, divide the total number of days by 7 (days in a week): 209 / 7 = 29 weeks and 6 days remainder.
Since Aniruddh’s birthday is a Sunday, we add 6 days to Sunday. Sunday + 6 days = Saturday.

Correct Option: A

Ans: A

Explanation: First, determine the number of days between March 10th and September 25th.
March: 31 – 10 = 21 days
April: 30 days
May: 31 days
June: 30 days
July: 31 days
August: 31 days
September: 25 days
Total days = 21 + 30 + 31 + 30 + 31 + 31 + 25 = 199 days.
Next, find the remainder when 199 is divided by 7 (days in a week): 199 mod 7 = 3.
Since Eshan’s birthday is a Friday, and there are 3 days between the two birthdays, Shlok’s birthday is Friday + 3 days = Monday.

Correct Option: A

Ans: A

Explanation:
1. **Calculate the number of days between the two dates:**
* April has 30 days. Days remaining in April: 30 – 12 = 18 days
* Days in May: 31
* Days in June: 30
* Days in July: 31
* Days in August: 31
* Days in September: 30
* Days in October: 2
* Total days = 18 + 31 + 30 + 31 + 31 + 30 + 2 = 173 days
2. **Determine the number of weeks and remaining days:**
* 173 days / 7 days/week = 24 weeks and 5 days
3. **Calculate Shray’s birthday:**
* Faiyaz’s birthday is on Wednesday.
* Since there are 5 extra days, we count 5 days forward from Wednesday: Wednesday -> Thursday -> Friday -> Saturday -> Sunday -> Monday.
* Shray’s birthday is on a Monday.

Correct Option: A

Ans: A

Explanation: The number of days between May and November needs to be calculated. May has 31 days. June has 30 days. July has 31 days. August has 31 days. September has 30 days. October has 31 days. November (until Shreyas’ birthday) has an unknown number of days.
From the start of May until the end of October is 31+30+31+31+30+31 = 184 days.
184 days is equivalent to 184 mod 7 = 26 weeks and 2 days.
So, Shreyas’ birthday is 2 days after Sunday, which is Tuesday.
Correct Option: A

Ans: B

Explanation:
1. **Years between the dates:** From July 19th, 2000 to July 19th, 2012, there are 12 years.
2. **Leap years:** The leap years in this range are 2000, 2004, 2008, and 2012. Since we are looking for a date *before* July 19th in 2012, we count 3 leap days in the range (2000 counts as it is after July 19th, 2012 does not).
3. **Total extra days:** Regular years have 1 extra day, and leap years have 2. So, the total extra days are (12 – 3) + (3 * 2) = 9 + 6 = 15 days.
4. **Day shift to July 19th 2012:** 15 days is equivalent to 15 mod 7 = 1 extra day. So July 19th, 2012 was a Thursday (Wednesday + 1 day).
5. **Days from June 15th to July 19th:** From June 15th to July 19th, there are (30 – 15) + 19 = 15 + 19 = 34 days.
6. **Day shift from June 15th 2012:** 34 days is equivalent to 34 mod 7 = 6 extra days. Since July 19th was a Thursday, June 15th was Thursday – 34 days, which is the same as Thursday – 6 days = Friday.
7. **Consider whether leap day 2012 is included:** Since the question specifies June 15th 2012 we need to consider 2012 is a leap year. June 15th 2012 is before the end of the year so we must account for the leap year.
8. **Calculate the offset from July 19th, 2000 to June 15th, 2012.** From July 19, 2000 to July 19, 2012 is 12 years. The number of leap years between these two dates is 2000, 2004, 2008, 2012; however, since we’re interested in the date before July 19th, 2012, we count 3 leap years in the calculation. Thus, the number of extra days is (9 regular years * 1 day) + (3 leap years * 2 days) = 9 + 6 = 15 days, which is 15 mod 7 = 1 day. So, July 19, 2012 was a Thursday (Wednesday + 1). Now, to get to June 15, 2012, calculate the number of days between June 15 and July 19, which is 15 days in June + 19 days in July = 34 days total. Thus we need to go back 34 days. 34 mod 7 is 6. So, we need to go back 6 days from Thursday, which is Friday.
Correct Option: B

Ans: A

Explanation: March has 31 days. April has 30 days. May has 31 days. June has 30 days.

From March 8th to March 31st: 31 – 8 = 23 days
April: 30 days
May: 31 days
June: 30 days
July 1st to July 10th: 10 days

Total days = 23 + 30 + 31 + 30 + 10 = 124 days

124 divided by 7 (days in a week) = 17 weeks and 5 days.

Since Meetu’s birthday (March 8th) is on a Wednesday, we add 5 days to Wednesday:
Wednesday + 5 days = Monday (Wednesday -> Thursday -> Friday -> Saturday -> Sunday -> Monday)

Correct Option: A

Ans: A

Explanation: First, calculate the number of days between April 27th and October 20th.
April has 30 days, so there are 30 – 27 = 3 days remaining in April.
May has 31 days.
June has 30 days.
July has 31 days.
August has 31 days.
September has 30 days.
From October 1st to October 20th, there are 20 days.
Total days = 3 + 31 + 30 + 31 + 31 + 30 + 20 = 176 days.
Now, divide the total days by 7 to find the number of weeks and the remainder.
176 / 7 = 25 weeks and 1 day.
Since Mishti’s birthday is on Thursday, and there is a remainder of 1 day, Aradhya’s birthday will be Thursday + 1 day = Friday.

Correct Option: A

Ans: A

Explanation: January 1st, 2007 was a Monday. Therefore, January 31st, 2007 was a Wednesday.
Correct Option: A

Ans: C

Explanation: To solve this, we can use the concept of “days of the week.” August 15, 2010 was a Sunday.

Ans: D

Explanation: To determine the day of the week for August 15, 2018, we can use the following approach. First, we need to know a reference date. Let’s use January 1, 2018. 2018 is not a leap year. January 1, 2018 was a Monday. Now we calculate the number of days from January 1, 2018 to August 15, 2018.

January has 31 days.
February has 28 days (2018 is not a leap year).
March has 31 days.
April has 30 days.
May has 31 days.
June has 30 days.
July has 31 days.
August has 15 days.

Total days = 31 + 28 + 31 + 30 + 31 + 30 + 31 + 15 = 227 days.

Now divide 227 by 7 to find the remainder.
227 / 7 = 32 with a remainder of 3.

Since January 1, 2018, was a Monday, we add 3 days to Monday:
Monday + 1 day = Tuesday
Tuesday + 1 day = Wednesday
Wednesday + 1 day = Thursday

So, August 15, 2018, was a Wednesday.