How to get next scheduled trigger time programmatically?

Question

I make a new installable trigger that fires each 2 days for my spreadsheet programmatically. Then when I return to the spreadsheet, can I get the next time it will trigger a fun

Answer 1

There is no method for checking when a trigger will next run or even when it last ran. What you can do however is record when a trigger runs as part of your trigger function. Depending on your application, you can then store the value in a spreadsheet (or better yet use Properties service) and then compare this value to the current date/time to generate "Next trigger at..."

This essentially accomplishes the same functionality without having to call a trigger method.