"Ray" wrote in message
...
Hi,

I normally automatically reset all my data including Rainfall at
Midnight on my Davis Weather Monitor II. Is there a set time this
should be done? It seems logical to do it by the day but maybe
standards specify a different time?


There is a section in the FAQ relating to times for climatological
readings:-

http://homepage.ntlworld.com/booty.weather/FAQ/6D.htm

It's a difficult one, as to someone with an all-singing, all-dancing
AWS, they can't understand why rainfall should be 'artificially' defined
to the 09-09 standard, but if you can record *both* periods (and keep a
careful distinction between the two), then that would be useful.

Martin.

(PS ... stand back and wait for the debate!)


--
FAQ & Glossary for uk.sci.weather at:-
http://homepage.ntlworld.com/booty.weather/uswfaqfr.htm
and
http://booty.org.uk/booty.weather/metindex.htm