What is the official time of an all nighter?

There is no official time for an all-nighter. It's a colloquial term that simply means staying awake for the entire night.

However, for most people, an all-nighter would generally be considered staying awake from the evening hours (around 8pm or 9pm) until the following morning.

It's important to note that staying awake for an extended period can have negative effects on your health and wellbeing.