Is it breakfast time in New York? Nobody wants an unnecessary phone call at 6am and it’s a logistical headache if you’re adding several time zones. World Time Buddy is handy for this: slide along to the desired time on your end and check to ensure ungodly hours are avoided for everyone else. The most useful bit is for scheduling meetings. Highlight the block of time to schedule and share with others to Google Calendar, iCal, Outlook or Clipboard for cutting and pasting into an email or document. The website interface is best; you have to pay to add more than four time zones on the app versions.

worldtimebuddy.com