• worldtimebuddy.com
  • Link with 5 timezones

• timeanddate.com
  • Christchurch, Nz
  • Toulouse, Fr

TZ='America/Los_Angeles' date
TZ='America/Denver' date
TZ='America/Chicago' date
TZ='America/New_York' date

• List of UTC offsets

• List of tz timezones

• worldtimezone.com

• greenwichmeantime.com

• Testing

  • Spoof Timezone browser extension
    • https://github.com/joue-quroi/spoof-timezone