system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] (NSFW) Do we have a rough idea of when Luke and Leia were conceived?

It seems like the window for conception is kinda slim, between Anakin's many Clone Wars campaigns, Jedi oversight, Padme's senatorial obligations, and other Clone Wars shenanigans throwing themselves into the mix during the final year of the Republic.

Do we know when they likely hooked up, or at least a "not before this date or after this event" kinda range?
gpt
In the Star Wars Obsession comic, Anakin and Padme have a week together in secret (until Obi-Wan tracks him down) on Varykino right before the Outer Rim sieges. I’m pretty sure that’s following GL words on the matter, where the twins were concieved at the happiest place there parents ever were in love. 

Also important to remember Padme was only in her second trimester in ROTS, so the twins were born premature and would fit into that timeline (you can imagine why they look fully grown when born though).