bp_nouveau_get_message_date( $date,  $date_format = '' )

function bp_nouveau_get_message_date( $date ) {
	$now  = bp_core_current_time( true, 'timestamp' );
	$date = strtotime( $date );

	$now_date    = getdate( $now );
	$date_date   = getdate( $date );
	$compare     = array_diff( $date_date, $now_date );
	$date_format = 'Y/m/d';

	// Use Timezone string if set.
	$timezone_string = bp_get_option( 'timezone_string' );
	if ( ! empty( $timezone_string ) ) {
		$timezone_object = timezone_open( $timezone_string );
		$datetime_object = date_create( "@{$date}" );
		$timezone_offset = timezone_offset_get( $timezone_object, $datetime_object ) / HOUR_IN_SECONDS;

	// Fall back on less reliable gmt_offset
	} else {
		$timezone_offset = bp_get_option( 'gmt_offset' );
	}

	// Calculate time based on the offset
	$calculated_time = $date + ( $timezone_offset * HOUR_IN_SECONDS );

	// use M j for all, will revisit this later
	// if ( empty( $compare['mday'] ) && empty( $compare['mon'] ) && empty( $compare['year'] ) ) {
	// 	$date_format = 'H:i';

	// } elseif ( empty( $compare['mon'] ) || empty( $compare['year'] ) ) {
	// 	$date_format = 'M j';
	// }

	$date_format = 'M j';

	/**
	 * Filters the message date for BuddyPress Nouveau display.
	 *
	 * @since BuddyPress 3.0.0
	 *
	 * @param string $value           Internationalization-ready formatted date value.
	 * @param mixed  $calculated_time Calculated time.
	 * @param string $date            Date value.
	 * @param string $date_format     Format to convert the calcuated date to.
	 */
	return apply_filters( 'bp_nouveau_get_message_date', date_i18n( $date_format, $calculated_time, true ), $calculated_time, $date, $date_format );
}