importAURN datetime wrong

[FlorentinBulotAQ]

Hello,

When importing data from the AURN network from Southampton Center station, there is a one hour time offset compared to the actual data:

importAURN(site="SOUT", year = 2019, pollutant ="pm2.5") %>%
  filter(date>=as.POSIXct("2019-12-02 08:00:00", tz = "UTC"), date<=as.POSIXct("2019-12-02 11:00:00",tz = "UTC"))

gives me:

                 date  pm2.5               site code
1 2019-12-02 08:00:00 22.689 Southampton Centre SOUT
2 2019-12-02 09:00:00 21.580 Southampton Centre SOUT
3 2019-12-02 10:00:00 20.708 Southampton Centre SOUT
4 2019-12-02 11:00:00 13.043 Southampton Centre SOUT

But if I get the data from https://uk-air.defra.gov.uk/data/data_selector_service for the same period of time, I am getting:

The date format from importAURN is in GMT which should be the same than UTC but I think something is wrong with correction of summer/non-summer time.

Is there anyway to fix that from the data import? Otherwise it can be fixed manually after importing the data.

Thank you very much, With best wishes, Florentin.

[jmclaren17]

Florentin, it is the same data - the time from Defra is hour ending, where as time from importAURN is hour beginning.
There is nothing wrng with the data. Hour beginning is 00:00 to 23:00 and Hour ending is 01:00 to 24:00.

[FlorentinBulotAQ]

Indeed, thanks a lot.