If 26th January, 2019 was a Saturday, what day of the week would it have been on the 15th of August, 2015?

Saturday

The correct answer is Option (1) → Saturday

Given: 26th January 2019 was a Saturday.

Required: Day on 15th August 2015.

Find total number of days between 15th August 2015 and 26th January 2019.

Break down the duration:

• 15 Aug 2015 → 31 Dec 2015 = 138 days
• Full year 2016 = 366 days (leap year)
• Full year 2017 = 365 days
• Full year 2018 = 365 days
• 1 Jan 2019 → 26 Jan 2019 = 26 days

Total days: 138 + 366 + 365 + 365 + 26 = 1260 days

Number of odd days = 1260 mod 7 = 0

Therefore, 15th August 2015 was also a Saturday.