Unix timestamp

Unix timestamp Introduction

1. unix timestamp is a value used to represent the number of seconds elapsed since 00:00:00 utc on january 1, 1970.

2. unix timestamps are widely used in computer systems, usually in seconds, and can also be expressed in subtle and milliseconds.

3. in 32-bit systems, the time range represented by unix timestamps is approximately 1901 to 2038. in 64-bit systems, timestamps can represent a much larger range, enough to cover the foreseeable future.

4. current timestamp: the current timestamp is based on the time of the current device, for reference only!