You could do something like this: #set $now = $current.dateTime.raw #set $ago24 = $now - 86400 <p>The temperature 24 hours ago was $current(timestamp=$ago24).outTemp</p>
NB: This assumes that there is a record exactly 24 hours ago. If you're willing to settle for something within 10 minutes of 24 hours ago, the last line would be: <p>The temperature 24 hours ago was $current(timestamp=$ago24, max_delta=600).outTemp</p> -tk On Thu, Mar 14, 2019 at 5:08 PM Pat <p...@obrienphoto.net> wrote: > If you need a specific time, or "this hour yesterday", you would probably > have to do a custom extension to get that data for you. Search the group > here for some insight on those who've made custom extensions. > > On Thursday, March 14, 2019 at 6:41:16 PM UTC-4, Ferran Vidal Marginet > wrote: >> >> Thank you Pat but, if I'm not wrong, the tag $yesterday can be used to >> show some aggregations. But, how can I use this to show yesterday >> temperature at a certain specific time, not an aggregation? >> Many thanks! >> Ferran > > -- > You received this message because you are subscribed to the Google Groups > "weewx-user" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to weewx-user+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
