Common IANA timezones:

North America:
  America/New_York       (US Eastern)
  America/Chicago        (US Central)
  America/Denver         (US Mountain)
  America/Los_Angeles    (US Pacific)
  America/Toronto
  America/Mexico_City

Europe:
  Europe/London
  Europe/Paris
  Europe/Berlin
  Europe/Amsterdam
  Europe/Madrid
  Europe/Dublin

Asia & Pacific:
  Asia/Tokyo
  Asia/Shanghai
  Asia/Singapore
  Asia/Kolkata           (India, UTC+5:30)
  Australia/Sydney
  Pacific/Auckland

Others:
  UTC
  America/Sao_Paulo
  Africa/Johannesburg
