My meter hasR1 and R2. Which is day and which is night?

My meter hasR1 and R2. Which is day and which is night?

@Ballylouis I would strongly suggest contacting Bulb directly by telephone or by email about this particular issue.

In my experience, typically, Rate 1 (R1) is day rate and Rate 2 (R2) is night rate, however, this may not be the same for you, there could have been a bug or error during switching etc.