rdblue commented on pull request #1368:
URL: https://github.com/apache/iceberg/pull/1368#issuecomment-694485109


   > Would it also be abnormal for users in two different time zones to write 
data to the same iceberg table(created by day partition)?
   
   All timestamps are passed to Iceberg using a fixed representation. For 
timestamp with time zone, values are converted to UTC and passed to Iceberg as 
micros from epoch. All values, regardless of the SQL session time zone are 
passed this way. So it doesn't matter to Iceberg what the SQL session time zone 
was. It just has to handle UTC timestamp values.


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