Series Sudoku (Fun With Sudoku #15)

This puzzle I created this for the 21st Indian Sudoku Mock Test.
This is my second Sudoku as Series Sudoku. First Series Sudoku was posted earlier and titled Series Sudoku (Fun With Sudoku #9). Can you solve this Series Sudoku puzzle?
I have posted more details about Series Sudoku in my previous post on Series Sudoku. In this Sudoku, the series is different and very interesting. One hint to solve this series is that one will require English language knowledge to solve this series. Do post your comments if you are able to find the next digit in this series.
This Sudoku I am posting as my 15th contribution to the Fun With Sudoku Series.

Rules and Instructions of Series Sudoku

Series Sudoku (Fun With Sudoku #15)

Series Sudoku (Fun With Sudoku #15) Solution

Previous Fun With Sudoku Series Puzzle: Sudoku 2D

Next Fun With Sudoku Series Puzzle: Classic Sudoku

 

Solution of Diagonal Arrow Sudoku (Daily Sudoku League #57)

Diagonal Arrow Sudoku (Daily Sudoku League #57) Solution