DateTime toUtc( )

Returns this DateTime value in the UTC time zone.

Returns this if it is already in UTC. Otherwise this method is equivalent to:

new DateTime.fromMillisecondsSinceEpoch(millisecondsSinceEpoch,
                                        isUtc: true)

Source

/**
 * Returns this DateTime value in the UTC time zone.
 *
 * Returns [this] if it is already in UTC.
 * Otherwise this method is equivalent to:
 *
 *     new DateTime.fromMillisecondsSinceEpoch(millisecondsSinceEpoch,
 *                                             isUtc: true)
 */
DateTime toUtc() {
  if (isUtc) return this;
  return new DateTime.fromMillisecondsSinceEpoch(millisecondsSinceEpoch,
                                                 isUtc: true);
}