Night light time

Asked by Anıl on 2019-10-31

Night light turns on 1 hour before the expected sunset.

timedatectl status
                      Local time: Prş 2019-10-31 17:28:19 +03
                  Universal time: Prş 2019-10-31 14:28:19 UTC
                        RTC time: Prş 2019-10-31 14:28:19
                       Time zone: Europe/Istanbul (+03, +0300)
       System clock synchronized: yes
systemd-timesyncd.service active: yes
                 RTC in local TZ: no

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Ubuntu tzdata Edit question
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Manfred Hampl (m-hampl) said :

Please provide more details:

tzdata is responsible for the clock settings, but has nothing to do with "night light".
Which "light light" are you taking about?

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Anıl (anlyldz27) said :

Yes maybe asking wrong section. Sorry for that. Im asking in Display setting Night Light or Mode. Its not response correct sunset/sunrise time.

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Manfred Hampl (m-hampl) said :

What is the output of the commands

uname -a
lsb_release -crid
gsettings list-recursively org.gnome.settings-daemon.plugins.color

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Anıl (anlyldz27) said :

uname -a
5.0.0-32-generic #34~18.04.2-Ubuntu SMP Thu Oct 10 10:36:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

$ lsb_release -crid
Distributor ID: Ubuntu
Description: Ubuntu 18.04.3 LTS
Release: 18.04

$ gsettings list-recursively org.gnome.settings-daemon.plugins.color
org.gnome.settings-daemon.plugins.color night-light-schedule-automatic true
org.gnome.settings-daemon.plugins.color priority 0
org.gnome.settings-daemon.plugins.color recalibrate-display-threshold uint32 0
org.gnome.settings-daemon.plugins.color night-light-last-coordinates (41.018000000000001, 28.93)
org.gnome.settings-daemon.plugins.color night-light-enabled true
org.gnome.settings-daemon.plugins.color night-light-schedule-from 18.0
org.gnome.settings-daemon.plugins.color night-light-schedule-to 6.0
org.gnome.settings-daemon.plugins.color night-light-temperature uint32 4000
org.gnome.settings-daemon.plugins.color recalibrate-printer-threshold uint32 0
org.gnome.settings-daemon.plugins.color active true

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Manfred Hampl (m-hampl) said :

The settings look correct (coordinates are near Topkapi in Istanbul). (comment 2) explains that the gradual transition from day settings to night settings starts one hour before sunset and continues until it is complete at the calculated sunset time.
In the morning the transition also starts one hour before sunrise.

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