Why is my Chat trigger not firing at the correct time or on the right day? Why is my time trigger not firing?
Time conditions for your Chat trigger are scheduled to fire in Coordinated Universal Time (UTC). The days of the week are numbered 0 through 6 (Monday through Sunday). See the Time/Date trigger conditions for more detailed information.
For more information, see the articles: How can I troubleshoot common Chat trigger issues? and How do time conditions work with Chat triggers?