Uttarakhand school holiday tomorrow is not explicitly known for any specific reason in the provided evidence. The article discusses the possibility of schools remaining closed due to heavy rain in various states, including Uttarakhand, but it does not provide any information about the school holiday being known for a particular reason.
The article mentions that the schools in Uttarakhand might be closed due to heavy rain, but it does not provide any further details about the school holiday. It is essential to note that the article is focused on the possibility of school closures due to weather conditions, rather than the school holiday itself.
The article does not provide any information about the school holiday being known for a particular reason, and it is unclear what specific aspect of the school holiday the question is referring to. If the question is asking about the reason for the school holiday, the supplied evidence does not provide a direct answer.