Happy Birthday, FastSandals: A Birthday Sudoku

Today's Puzzle:

Excellent mid-week puzzle, always an occasion to celebrate a birthday.

Link to Play:

Happy Birthday, FastSandals! by Timotab https://tinyurl.com/SudokuSleuthBirthdayFastSand

Rules:

Normal Sudoku rules apply: Place the digits 1-9 in each row, column, and box, once each.

Clones: Shaded areas are clones. Digits in clones must be identical and in identical positions in each clone.

Little Killers: Numbers outside the grid give the sum of the indicated diagonal. These digits can repeat if allowed by other rules.

Killer Cages: Digits in cages cannot repeat, and must sum to the value in the top left corner of the cage.