It is said that one should not sleep during sunrise. Suppose I was awake all night for study, job, mahashivratri or whatever. I stayed awake during sunrise and after the sunrise I decide to sleep. How much time past sunrise can I go to bed so that I get no ill effects or least ill effects (like lethargy, tamas)?
The only advice I found till now is by Shri radhavallabh shri harivansh ji i.e. You can sleep again if it has been 48 minutes since sunrise. link here
This Islam thread also discusses the same thing, it says that after the sunrise they can sleep when they like. But the sandhya kala lasts for 20/24/48 minutes after the sunrise according to various sources. How many minutes should I wait to go to bed after sunrise?