os.date
Example
This will use the os.time() function, and return it in a friendly way. os.time() is useful for storing as a date stamp but needs this to make it readable.
local Timestamp = os.time()
local TimeString = os.date( "%H:%M:%S - %d/%m/%Y" , Timestamp )
print( "Timestamp:", Timestamp )
print( "TimeString:", TimeString )
Output:
Timestamp: 1584402168
TimeString: 23:42:48 - 16/03/2020