Please remember to copy the list on all replies.

I take it that that means that you do in fact use the business invoice 
features. Let's see if that's the source of the problem. Run this query:

select t.post_date::TIME count(t.post_date::TIME) from transactions as t inner 
join invoices as i on i.post_txn = t.guid group by t.post_date::TIME;

Regards,
John Ralls


> On Apr 29, 2020, at 1:41 PM, Finfort <finf...@gmail.com> wrote:
> 
> But the program use business features like entering invoices or bills.
> And we have this mess. 
> How we can manage that?
> 
> 
> 
>> On Apr 29, 2020 at 23:23, <John Ralls> wrote:
>> 
>> Dimon,
>> 
>> I'm in Silicon Valley, so 10 hours behind you.
>> 
>> By "simple invoices" do you mean that some of the transactions are created 
>> using business invoices?
>> 
>> My book goes back to 1993 and entry_dates begin in 2001. We changed the 
>> transaction time from local midnight in early 2011 so `select distinct 
>> time(post_date) from transactions;` returns
>> 10:59:00
>> 07:00:00
>> 
>> If I say instead `select distinct time(post_date) from transactions where 
>> post_date > '2011-01-01';` I just get 10:59:00.  
>> 
>> But I don't use the business features, so if that's the problem my book 
>> won't show it.
>> 
>> Regards,
>> John Ralls
>> 
>> > On Apr 29, 2020, at 10:13 AM, Finfort <finf...@gmail.com> wrote:
>> >  
>> > Hi John!
>> > You are here finally!
>> > Waiting for you all the day :)
>> >  
>> > All my data I have entered inside Gnucash 3.7,  Ubuntu. No imports! 
>> > Scheduled are ok!
>> > Just simple invoices inside the program!
>> > The SQL type conversions inside Postgres give better results with 22:00 
>> > but 21:00 show the same date again even in April - summer time where is 
>> > for example 2018-06-04 21:00:00+03.
>> > 22:00+02 is 00:00 of the next day, 21:00+03 (summer time) is 00:00 of the 
>> > next day but conversion does not work...
>> > So, maybe you could try this SQL to check your records and revise the 
>> > procedure which posts the data to DB?
>> >  
>> > Thank you,
>> > Dimon.
>> >   
>> >  
>> >  
>> >  
>> >  
>> >> On Apr 29, 2020 at 19:50, <John Ralls> wrote:
>> >>  
>> >> > On Apr 29, 2020, at 2:18 AM, finf...@gmail.com wrote:
>> >> >   
>> >> > Dear John,
>> >> >   
>> >> > Thank you  for your response.
>> >> >   
>> >> >   
>> >> > I have collected some statistics from my DB.
>> >> >   
>> >> > My DB has 1724 records - transactions.
>> >> >   
>> >> > This is my SQL query, it is pretty simple and shows all the 
>> >> > combinations of times in posted_date timestamps in transactions table, 
>> >> > number of repetitions for that time value, min enter_date, max 
>> >> > enter_date:
>> >> >   
>> >> > SELECT
>> >> >     t.post_date::TIME as "POST TIME",
>> >> >     COUNT(t.post_date::TIME) as "REPS",
>> >> >     min(t.enter_date) as "MIN ENTER DATE",
>> >> >     max(t.enter_date) as "MAX ENTER DATE"
>> >> > FROM transactions t
>> >> > GROUP BY t.post_date::TIME
>> >> > ORDER BY t.post_date::TIME
>> >> >   
>> >> > Here are the results:
>> >> >   
>> >> > ----
>> >> >   
>> >> > POST TIME   REPS      MIN ENTER DATE             MAX ENTER DATE
>> >> >   
>> >> > "00:00:00"    18        "2020-01-26 18:07:14"    "2020-01-28 19:11:07"
>> >> > "10:59:00"    1177    "2019-12-23 17:55:29"    "2020-04-23 11:24:24"
>> >> > "21:00:00"    251      "2020-01-08 17:43:54"    "2020-04-23 10:36:33"
>> >> > "22:00:00"    256      "2020-01-08 17:06:59"    "2020-04-23 11:24:08"
>> >> > "23:00:00"    22        "2020-01-27 19:16:04"    "2020-01-28 19:39:49"
>> >> >   
>> >> > ----
>> >> >   
>> >> > I live in Cyprus, here is UTC +2 and summer time UTC +3, as I know.
>> >> >   
>> >> > I started to study Gnucash in December 2019 and have entered my data of 
>> >> > 2016-2020.
>> >> >   
>> >> > I never changed my place and time zone in the period of working with 
>> >> > Gnucash.
>> >> >   
>> >> >   
>> >> > 1. Most of the records have time in date_posted 10:59:00 for all the 
>> >> > period of data entering.
>> >> >   
>> >> > 2. Only 2 days of entering have the results of 00:00:00 - 18 records.
>> >> >   
>> >> > 3. Only 2 days of entering have the results of 23:00:00 - 22 records.
>> >> >   
>> >> > 4. 21:00:00 and 22:00:00 - 500+ records - 30% of transactions for all 
>> >> > the period of data entering.
>> >> >   
>> >> >   
>> >> > Can you please explain that?
>> >> >   
>> >> > Why I have so many different time stamps? When and why the system 
>> >> > decides to write time different from 10:59:00?
>> >> >   
>> >> > I understand that the system writes real ENTERING date and time and it 
>> >> > is reasonable to use the time zone somehow.
>> >> >   
>> >> > When I POST the document with exact date in it I suppose to see this 
>> >> > POST DATE the same wherever in Cyprus or UK or USA. But entering the 
>> >> > same date I can have 5 different results. How it works and what is the 
>> >> > reason - I have no idea...
>> >> >   
>> >> > Maybe you can give some examples and the algorithm to convert these 
>> >> > dates? Where else I have to convert dates?
>> >>  
>> >> As those are all posted dates you've found a bug or two as posted date 
>> >> should always have a 10:59:00 timestamp. The 21:00 and 22:00 times are 
>> >> clearly midnight local, and which one is used *should* be determined by 
>> >> whether DST is in effect for the posted date in your locale. It seems 
>> >> that 40 transactions somehow used UK time instead of Cypress time.
>> >>  
>> >> Did you enter all of the transactions from the GnuCash UI or did you 
>> >> import some of them? If you imported some is there any way to tell which 
>> >> were imported (and from where and by what method), perhaps by the 
>> >> accounts their splits are in or because you still have some of the import 
>> >> files?
>> >>  
>> >> Were any of them created by scheduled transactions?
>> >>  
>> >> Regards,
>> >> John Ralls
>> >>  
>> >>  
>> 
>> 

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