You can still use the legacy version of the classic Time Zone Converter to find the time difference between locations worldwide.
Elsewhere on timeanddate.com
Event Time Announcer
Need to let the world know when your event is occurring in their time zone?
Meeting Planner
Find the best meeting time across different time zones worldwide...
Live Countdown Timer With Animations
Countdown with colorful animations counting down the weeks, days, minutes, hours, and seconds...
Time API
Get the time at any given coordinate on Earth, calculate time zone conversions.