How to make a mod generated by time::serde::format_description! public?

[zwlxt]

For example, the code below

time::serde::format_description!(
    my_date_time_format,
    OffsetDateTime,
    "[year]-[month]-[day] [hour]:[minute]:[second] [offset_hour]"
);

generates
mod my_date_time_format { ... }

What I want is to put this code somewhere, make it public and use it from anywhere in the crate. How to achieve this? Please help!