If, after the date, the text does not contain any other numbers or backslash, you can try:
Filter ( YourList ; "1234567890/¶" )
Filter ( List A ; "/0987654321¶" )
But I recommend that you consider creating a table of related records with one record for each date and these dates should then be entered into a field of type date instead of text. A text field can then store the text to the right of the date for each entry.