How many actual days is 1.2 million lux hrs as per ICH Q1B guideline?

24 January 2023 0 8K Report

As per ICH Q1B guideline, photo stability needs to be done until sample is exposed for 1.2 million lux hrs by a light source of 200 watt hr/m2 intensity. But there is no mention of how many actual days is 1.2 million lux hrs. Does anyone know?

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