Minimum power consumption

[gilles38]

Hi all,
Since years I'm calculating the "always on" power value by taking the minimum value in the data base everyday.
the power value is coming from the main power meter of my installation, and is placed in a trend.

I just have installed some PV... so I need to modify my calculation ... and need now to do the calculation when the PV is not producing ... 
between 0:00AM and 6AM and from 9PM to 11h59PM

 

Code:

require('trends') function get_days_in_month(month, year)   local days_in_month = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }      local d = days_in_month[month]       -- check for leap year   if (month == 2) then     if (math.mod(year,4) == 0) then      if (math.mod(year,100) == 0)then                      if (math.mod(year,400) == 0) then                              d = 29       end      else                      d = 29      end     end   end   return d  end dates = {} dates['start'] = os.date('*t') dates['end'] = os.date('*t') if(dates['start'].day==1)then   if(dates['start'].month==1) then     month=12     year=dates['start'].year-1   else     month=dates['start'].month     year=dates['start'].year   end   day=get_days_in_month(month,year)   month=dates['start'].month   year=dates['start'].year else   day=dates['start'].day-1   month=dates['start'].month   year=dates['start'].year end     dates['start'].day=day   dates['start'].month=month   dates['start'].year=year   -- fetch value resolution = 86400/4 Values = trends.fetch('Total Power', dates, resolution) min = math.min(unpack(Values))*1000 grp.write('15/1/61', min)

as in documentation I have seen that for dates [start] and [ends] the time is not taken in consideration ....how can I do ?

thanks all for support 
Gilles