# bson_append_date_time()

## Synopsis

    bool
    bson_append_date_time (bson_t     *bson,
                           const char *key,
                           int         key_length,
                           int64_t     value);

## Parameters

bson | A bson_t.
key | An ASCII C string containing the name of the field.
key_length | The length of key in bytes, or -1 to determine the length with strlen().
value | The date and time as specified in milliseconds since the UNIX epoch.

## Description

The bson_append_date_time() function shall append a new element to a bson document containing a date and time with no timezone information. value is assumed to be in UTC format of milliseconds since the UNIX epoch. value MAY be negative.

## Returns

true if the operation was applied successfully, otherwise false and bson should be discarded.