Figured out the years the Hammer Horror Dracula movies take place
Hammer Horror's: Dracula - 1885
Brides Of Dracula - 1888
Dracula: Prince Of Darkness - 1889
Dracula Has Risen From The Grave - 1895, Just add ten years from 1885.
Taste The Blood Of Dracula - 1899
Scars Of Dracula - 1903
Dracula A.D. 1972, The film starts off with a flashback to 1872, thirteen years before the events of the first film which took place in 1885. This would indicate that Van Helsing had a fight and conflict with Dracula before the first film. This would also explain why Van Helsing recruited Johnathan to go after Dracula in the year 1885.
Satanic Rites Of Dracula - 1973
The Legend Of The Seven Golden Vampires starts with a prologue flash back to 1804 before the events of the 1958 Dracula film. This indicates that Dracula has changed his appearance in China disguised as a monk and frequently travels in between China and Europe over the years.
Makes sense since he has all the powers of Hell at his disposal meaning he can change his appearance based on where he is at to blend in. The story skips to 1904, this would indicate that it's a prequel to Dracula A.D.