Best date and time formatting crate for Rust?

Date an time are horribly complicated. For this reason many languages include solid date and time formatting things (e.g. check out C strftime or Javascript Intl.DateTimeFormat). What are people using for this kind of thing currently?

chrono crate has lots of time mangling things but it's implementation of strftime only has English and it quite limited compared to C's.

fluent has the DATETIME macro which is very comprehensive, but is not yet implemented in fluent-rs.