Add dates to pm2 error logs

pm2 start app.js --log-date-format 'DD-MM HH:mm:ss.SSS' --name app

pm2 start app.js --log-date-format "YYYY-MM-DD HH:mm Z"

References
https://stackoverflow.com/questions/21317852/how-to-add-dates-to-pm2-error-logs
https://stackoverflow.com/questions/28372080/in-pm2-log-format-yyyy-mm-dd-hhmm-z-what-does-z-mean