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FAQ: Difference between revisions
→How does Cumulus handle Daylight Saving Time?
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== How does Cumulus handle Daylight Saving Time? == | == How does Cumulus handle Daylight Saving Time? == | ||
As far as the timestamps in the logs (and the graphs) are concerned, Cumulus doesn't do anything in particular for DST. It generates timestamps based on the Windows clock. So basically, at the start of DST (i.e. when the clocks 'go forward') you will get an apparent gap of one hour in your data, and similarly at the end of DST (i.e. when the clocks 'go back') you will get an apparent hour of duplicate timestamps in your logs and graphs. The exact timing of the affected hours depends on the type of station and when Cumulus was running. | As far as the timestamps in the logs (and the graphs) are concerned, Cumulus doesn't do anything in particular for DST. It generates timestamps based on the Windows clock. So basically, at the start of DST (i.e. when the clocks 'go forward') you will get an apparent gap of one hour in your data, and similarly at the end of DST (i.e. when the clocks 'go back') you will get an apparent hour of duplicate timestamps in your logs and graphs. The exact timing of the affected hours depends on the type of station and when Cumulus was running. You will tend to get better results if you leave Cumulus running during the clock change. | ||
== What formula does Cumulus use for Apparent Temperature? == | == What formula does Cumulus use for Apparent Temperature? == | ||