Month-to-month weekday shift – If 1st March falls on a Saturday, determine the weekday on which 1st April will fall (no special-year caveats are needed).

Introduction / Context:
We use month-length to compute weekday shifts from one month’s first day to the next month’s first day. Only the number of days in the current month matters for the shift.

Given Data / Assumptions:

• 1 March is Saturday.
• March has 31 days.
• We seek 1 April’s weekday in the same year.

Concept / Approach:
Advancing by 31 days advances the weekday by 31 mod 7 = 3 days. The specific year (leap or not) does not affect this March→April shift because only March’s length is used.

Step-by-Step Solution:
1 March = Saturday.Add 31 days: weekday shift = +3.Saturday + 3 = Tuesday.

Verification / Alternative check:
Count week blocks: 28 days (4 weeks) bring Saturday to Saturday; add 3 more days → Tuesday. Consistent.

Why Other Options Are Wrong:
Sunday/Monday/Thursday are ±1 day from the necessary +3 shift; only Tuesday fits exactly.

Common Pitfalls:
Assuming leap-year specifics change the March to April step; they do not because March always has 31 days.

Final Answer:
Tuesday