Day of the week a whole number of years apart (odd days, allowing for leap years)

This type of question, asked 2 times: 18 Jul 2023 S3, 25 Jul 2023 S3. All 2 questions below, oldest first.

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Question 1
18 Jul 2023 S3
17 $If exactly 1 year and 2 days later it is Tuesday, then what day is it today? It is not a leap year.$
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Question 2
25 Jul 2023 S3
11 $If 31 January 2009 was a Saturday, then what was the day of the week on 30 January 2013?$
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