android - Android Timestamps vs Unix Timestamps

Question

sorry I don't have experience with Android. I have been using an app to record IMU data and I need timestamps since epoch in nanoseconds. The app generates cvs file that states

Timestamp[nanosec]
379575046451850
379575051336382 ...

However, I always have been familiar with the timestamp like this

timestamp
1602663595777087900
1602663595795272900

Both should be in nanoseconds. I am curious because two independent apps that record data generate timestamp in ns in the same format. How should I interpret the above data?

标签： androidtimestamp

Answer 1

假设当前纪元时间是1604009999（10 位），这些可能是微秒（1/1,000,000 秒）：379575046451850，379575051336382（39 年前）。这些是纳秒（十亿分之一秒）：1602663595777087900，1602663595795272900（16 天前）。不太确定以 开头的格式3795750，也许人们可以以不同的方式解释它们。这个问题并没有说明它们应该是什么意思，而且 39 年前还没有 Android。也许这是一个 Excel 时间戳？