Hello everyone, This is my first post!
I have a question regarding posting times. I want to send a Valentine's card to my girlfriend

in Champery but I'm not sure how long it will take to get there. I don't want it to get there too early but obviously also don't want it to get there too late.
Anyone got any ideas when I should post? Whats the post like in Switzerland?
Thank you in advance and also sorry if these questions seem a bit stupid but I'm panicking, it's our first Valentines!
Ashley