What are my off-peak hours for economy 7?

This question of the hours for economy 7? comes on a more regular repetitive basis and the Help page at: https://help.bulb.co.uk/hc/en-us/articles/360015855172-What-are-my-off-peak-hours-for-economy-7- partly answers the question.

Would it be possible to expand this page by giving advice on how to find the exact hours?

Edited

@Allanr Knowing the off-peak hours of a meter requires a specific bit of information which we don’t know based on the property. We are trying to work out how we can tell this to our members in the welcome pack when they join.