vnstat2-php-frontend/lang/en.php

<?php

// sidebar labels
$L['summary'] = 'summary';
$L['hours'] = 'hours';
$L['days'] = 'days';
$L['months'] = 'months';

// main table headers
$L['Summary'] = 'Summary';
$L['Top 10 days'] = 'Top 10 days';
$L['Last 24 hours'] = 'Last 24 hours';
$L['Last 30 days'] = 'Last 30 days';
$L['Last 12 months'] = 'Last 12 months';

// traffic table columns
$L['In'] = 'In';
$L['Out'] = 'Out';
$L['Total'] = 'Total';

// summary rows
$L['This hour'] = 'This hour';
$L['This day'] = 'This day';
$L['This month'] = 'This month';
$L['All time'] = 'All time';

// graph text
$L['Traffic data for'] = 'Traffic data for';
$L['bytes in'] = 'bytes in';
$L['bytes out'] = 'bytes out';

// date formats
$L['datefmt_days'] = '%d %B';
$L['datefmt_days_img'] = '%d';
$L['datefmt_months'] = '%B %Y';
$L['datefmt_months_img'] = '%b';
$L['datefmt_hours'] = '%l%p';
$L['datefmt_hours_img'] = '%l';
$L['datefmt_top'] = '%d %B %Y';