spoilers for seasons 6 and 7 of The Clone Wars
In season 6 of TCW, Fives tries to uncover the truth about the clones' inhibitor chips, ultimately dying in Rex's arms as he's killed. In season 7, during the events of Order 66, Ahsoka seeks out the report Rex made about Fives' findings to learn about the chips.
This could have been mentioned somewhere and I missed it, but how much time takes place between these events? Wookieepedia says that Fives died in 19 BBY. This is the exact year that season 7 (and Revenge of the Sith) take place - so did Fives die only months before? Do we have a more exact number?