## Syntax
```mermaid
%%{init: {
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'themeVariables': {
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flowchart LR
Start((START)) --> FROM_UNIXTIME[FROM_UNIXTIME]:::quoted
FROM_UNIXTIME --> End((END))
```
## Purpose
The `FROM_UNIXTIME` SQL function gets the date/time from a number representing the seconds relative to start of UNIX epoch time on January 1, 1970.
Values before January 1, 1 (UNIX epoch time -62135593200) and on or after January 1, 10000 (UNIX epoch time 253402300799) return an error.
Parameters:
- Input (`long`): seconds relative to start of UNIX epoch time.
Returns: the date/time which the UNIX epoch time represents as a `datetime`.
## Examples
The following example retrieves the date for UNIX epoch time 0:
```sql
select to_char(from_unixtime(0), 'YYYYMMDD')
-------------------
19700101
```
The following example retrieves the date/time for one second before year 10000:
```sql
select to_char(from_unixtime(253402300799), 'YYYYMMDDHH24MISS')
-------------------
99991231235959
```