What are some alternatives?
When comparing Channel Time and Spacetime, you can also consider the following products
Every Time Zone - Online tool for keeping up with times around the world.
Timezone.io - Keep track where and when your team is.
TimeZoneNinja - Scheduling meetings around the world just got easy
Time&Time - Beautiful Time Zones Converter
TeamWatch - Simple menubar app to make remote work easier 💼⏰