Return a pointer to the 1970-01-01 00:00:00.000 epoch datetime.
Declared in <bdlt_datetimeimputil.h>
<bdlt_datetimeimputil.h>
static Datetime const* epoch_1970_01_01();
Return a pointer to a bdlt::Datetime with value `bdlt::Datetime(1970, 1, 1)` suitable for use during static initialization.
bdlt::Datetime
address of the Unix-epoch datetime constant