Synonyms of 'to date'
up to now
up to the present
You use yet in negative statements to indicate that something has not happened up to the present time, although it probably will happen. You can also use yet in questions to ask if something has happened up to the present time. In British English the simple past tense is not normally used with this meaning of 'yet'.
They haven't finished yet.
Thesaurus for to date from the Collins English Thesaurus
To date means up until the present time.