LocalTimeOffsetCallback is an alias for the type of a function that returns a bsls::TimeInterval value representing the difference between local time and UTC time at the specified utcDatetime. This function must be thread-safe in multi-threaded builds. Note that the installed callback function must have geographic information specifying the local timezone.
Declared in <bdlt_localtimeoffset.h>
typedef bsls::TimeInterval(* LocalTimeOffsetCallback)(Datetime const&);