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You need to have an external processing system looking at any real-time output to have a better chance of capturing the true extremes.
=== End of Day Actions ===
Cumulus software of all flavours as already mentioned can support various times when the meteorological days end. As the new day starts, Cumulus does a lot of actions, here is the list for MX:
<pre>Entering Day Reset (message about current day of month)
Day Reset (message about date ending, time shown as 00:00:00 because time not defined, not because it is midnight, it might be 9am or 10am)
Run EOD standard or custom SQL (the SQl is updated every time readings are updated)
Custom Http EOD call
Create line to append to dayfile.txt (this does hold extremes for each day)
Open dayfile.txt
Update dayfile.txt
Read Rain Counter
Update today.ini with yesterday's rain
Write yesterday.ini
Create NOAA monthly
Save NOAA monthly
Create NOAA yearly
Save NOAA yearly
Run EOD External Program
Processs any Extra Files with EOD option selected
Day reset complete
Read readings from weather station to assign to start of new day
Create daily backup folder to hold files as at start of new day
Copy all files from data folder (plus Cumulus.ini_(Cumulus_1)) into new daily folder
Resume normal operation of reading station, processing real-time and standard time interval functions
In the first Extra Files with standard interval FTP upload, add upload of NOAA files and Extra Files processed at end of day</pre>
You will see that if you set your standard logging interval to 10 minutes, and this end of day action was triggered at 10am, it would not finish until after 10:10am, so it is crucial not to have a power cut or anything else affecting the running of Cumulus throughout that period. Do not stop Cumulus after it starts processing end of day. For early versions of Cumulus 1, there was extra processing in the same interval before roll-over, so you could not restart Cumulus just before rollover was due.
== Special Features ==
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