Module datetime 

FIT timestamp conversions.

FIT stores absolute time as a u32 count of seconds since 1989-12-31 00:00:00 UTC — 631,065,600 seconds after the Unix epoch. The chrono-based helpers (fit_to_datetime / datetime_to_fit) are only compiled when the chrono feature is enabled.

Constants

FIT_EPOCH_OFFSET_SECS

Seconds between Unix epoch (1970-01-01) and FIT epoch (1989-12-31).

Functions

datetime_to_fit

Inverse of fit_to_datetime. Returns None if the datetime is before the FIT epoch or beyond u32::MAX seconds after it (≈ year 2125).

fit_to_datetime

Convert a FIT timestamp (seconds since FIT epoch) into a UTC datetime.