# \#ntp **URL:** https://community.openhab.org/tag/ntp/360.md [Latest](https://community.openhab.org/latest.md) · [Categories](https://community.openhab.org/categories.md) · [Tags](https://community.openhab.org/tags.md) --- ## [Rule/Things Engine not Runs without Reason for any few Minutes/Hours Daily](https://community.openhab.org/t/rule-things-engine-not-runs-without-reason-for-any-few-minutes-hours-daily/167361)
**Author:** [@RZmedia24openHAB](https://community.openhab.org/u/RZmedia24openHAB)\ **Replies:** 0\ **Last updated:** [November 29, 2025, 12:06am UTC](https://community.openhab.org/t/rule-things-engine-not-runs-without-reason-for-any-few-minutes-hours-daily/167361 "2025-11-29T00:06:03Z")
Hello, Things going Off, but tells to me “Online”. They are not works anymore. When i Set Manually to Disable and Enable, he going not back. i am seen Sometimes, that the Time from an Date And Time Item is not going Ac… --- ## [OH2.5: NTP does not update automatically](https://community.openhab.org/t/oh2-5-ntp-does-not-update-automatically/166594)
**Author:** [@Scylla](https://community.openhab.org/u/Scylla)\ **Replies:** 0\ **Last updated:** [October 2, 2025, 6:38pm UTC](https://community.openhab.org/t/oh2-5-ntp-does-not-update-automatically/166594 "2025-10-02T18:38:21Z")
Dear All, I just realized that in my old-fashioned openhab 2.5 instance, NTP Date and Time seem to no longer being updated automatically (i.e. sent perodically to the bus). When I change an NTP-Item manually in the .it… --- ## [NTP to KNX. Time is off. (after migration to 4.3?)](https://community.openhab.org/t/ntp-to-knx-time-is-off-after-migration-to-4-3/161187)
**Author:** [@borderbridge](https://community.openhab.org/u/borderbridge)\ **Replies:** 1\ **Last updated:** [December 30, 2024, 12:07pm UTC](https://community.openhab.org/t/ntp-to-knx-time-is-off-after-migration-to-4-3/161187 "2024-12-30T12:07:17Z")
Hi there, I recently updated from openhab 4.2 to 4.3. All went well untill i realized all “clocks” in the house are 1 hour off. Honestly i dont know if this has something to do with the update. but if not it would be an… --- ## [Bindings (NTP, Spotify, Alexa, Exec) stop to work / "hang" randomly](https://community.openhab.org/t/bindings-ntp-spotify-alexa-exec-stop-to-work-hang-randomly/145621)
**Author:** [@madattack](https://community.openhab.org/u/madattack)\ **Replies:** 7\ **Last updated:** [April 23, 2023, 12:15pm UTC](https://community.openhab.org/t/bindings-ntp-spotify-alexa-exec-stop-to-work-hang-randomly/145621 "2023-04-23T12:15:29Z")
Hi all, i run currently 3.4.2 on my RPi4. I suffered a long time from the UI freezes caused by heap, but that was finally solved by @florian-h05 with a fix in 3.4.1 https://github.com/openhab/openhab-addons/pull/13824 … --- ## [\[SOLVED\] Put time on KNX Bus with NTP Binding](https://community.openhab.org/t/solved-put-time-on-knx-bus-with-ntp-binding/70004)
**Author:** [@morax](https://community.openhab.org/u/morax)\ **Replies:** 2\ **Last updated:** [February 3, 2022, 5:04pm UTC](https://community.openhab.org/t/solved-put-time-on-knx-bus-with-ntp-binding/70004 "2022-02-03T17:04:58Z")
Hey guys, i have a problem putting time from the NTP-Binding to the KNX-Bus. Openhab is running in docker on rpi3. my home.things ntp:ntp:local \[ hostname="de.pool.ntp.org", refreshInterval=60, refreshNtp=30 \] Br… --- ## [Items do not show values](https://community.openhab.org/t/items-do-not-show-values/128306)
**Author:** [@wolfschw](https://community.openhab.org/u/wolfschw)\ **Replies:** 10\ **Last updated:** [November 8, 2021, 4:06am UTC](https://community.openhab.org/t/items-do-not-show-values/128306 "2021-11-08T04:06:34Z")
Platform information: Hardware: Raspberrypi 4 OS: Openhabian latest edition openHAB version: 3.1.0 Issue of the topic: items based one NTP-Binding and MQTT-Binding don’t show values. Please post configurations (if ap… --- ## [OH3: "connection to the timeserver 0.pool.ntp.org cannot be established"](https://community.openhab.org/t/oh3-connection-to-the-timeserver-0-pool-ntp-org-cannot-be-established/115048)
**Author:** [@jsprenkle](https://community.openhab.org/u/jsprenkle)\ **Replies:** 5\ **Last updated:** [January 22, 2021, 6:42pm UTC](https://community.openhab.org/t/oh3-connection-to-the-timeserver-0-pool-ntp-org-cannot-be-established/115048 "2021-01-22T18:42:35Z")
Platform information: Hardware: rpi 3 OS: openhab flash image from github openHAB version: openhabian-pi-raspios32-v1.6.2b.img.xz Issue of the topic: NTP not working from the log: 2021-01-22 01:08:07.237 \[INFO \] \[a… --- ## [NTP binding: documentation about formatting should refer to DateTimeFormatter Class?](https://community.openhab.org/t/ntp-binding-documentation-about-formatting-should-refer-to-datetimeformatter-class/113242)
**Author:** [@Pixilarion](https://community.openhab.org/u/Pixilarion)\ **Replies:** 2\ **Last updated:** [January 6, 2021, 11:58pm UTC](https://community.openhab.org/t/ntp-binding-documentation-about-formatting-should-refer-to-datetimeformatter-class/113242 "2021-01-06T23:58:32Z")
The readme of the NTP binding gives a few indications about how to format a date and time. I may very well be mistaken, but I think that it should refer to the DateTimeFormatter Class. The example may need some updatin… --- ## [Astro / NTP odd behavior - "losing time" overnight](https://community.openhab.org/t/astro-ntp-odd-behavior-losing-time-overnight/103591)
**Author:** [@RipNCode](https://community.openhab.org/u/RipNCode)\ **Replies:** 13\ **Last updated:** [August 16, 2020, 1:50pm UTC](https://community.openhab.org/t/astro-ntp-odd-behavior-losing-time-overnight/103591 "2020-08-16T13:50:54Z")
I have recently run into an odd problem where overnight, the time update seems to “stop” for a period. I presume this is an NTP issue, but the behavior is really strange. On any reboot of the Pi (openhabian) or restart… --- ## [Migration to KNX2: No bus write triggered](https://community.openhab.org/t/migration-to-knx2-no-bus-write-triggered/101085)
**Author:** [@sebk](https://community.openhab.org/u/sebk)\ **Replies:** 2\ **Last updated:** [June 21, 2020, 7:45pm UTC](https://community.openhab.org/t/migration-to-knx2-no-bus-write-triggered/101085 "2020-06-21T19:45:04Z")
Hi, I am currently in the process of migrating to KNX2. I know late - but better than never. I got almost everything working. Except sending openhab values to the knx bus. The strange thing is for some values it is wo… --- ## [The Missing Link to simple UI-configurable Scheduling](https://community.openhab.org/t/the-missing-link-to-simple-ui-configurable-scheduling/90104)
**Author:** [@Zeto](https://community.openhab.org/u/Zeto)\ **Replies:** 11\ **Last updated:** [January 13, 2020, 9:58am UTC](https://community.openhab.org/t/the-missing-link-to-simple-ui-configurable-scheduling/90104 "2020-01-13T09:58:22Z")
…and how to solve it. Yes, this is another thread about the widespread topic on “how can i implement a simple UI configurable scheduler, e.g. for an alarm clock?”. However my intent is a bit different, essentially all … --- ## [Ntp binding - couldn't establish network connection](https://community.openhab.org/t/ntp-binding-couldnt-establish-network-connection/31459)
**Author:** [@IceTrailer](https://community.openhab.org/u/IceTrailer)\ **Replies:** 3\ **Last updated:** [July 16, 2019, 8:52am UTC](https://community.openhab.org/t/ntp-binding-couldnt-establish-network-connection/31459 "2019-07-16T08:52:00Z")
Hello guys, I have following problem with ntp binding. OH2 prints “2017-07-12 10:37:21.665 \[WARN \] \[thome.binding.ntp.handler.NtpHandler\] - ntp:ntp:local couldn’t establish network connection \[host ‘0.pool.ntp.org’\] → … --- ## [Force NTP refresh with rule](https://community.openhab.org/t/force-ntp-refresh-with-rule/73285)
**Author:** [@kobold](https://community.openhab.org/u/kobold)\ **Replies:** 1\ **Last updated:** [April 29, 2019, 12:07pm UTC](https://community.openhab.org/t/force-ntp-refresh-with-rule/73285 "2019-04-29T12:07:54Z")
Hello, I have two items that supply my knx bus with the ntp time. I increased the time between the updates, so I have a problem when the power goes off and it takes some hours for the time to be updated using the refres… --- ## [\[SOLVED\] Sending NTP time to KNX in OpenHAB2?](https://community.openhab.org/t/solved-sending-ntp-time-to-knx-in-openhab2/23612)
**Author:** [@toby](https://community.openhab.org/u/toby)\ **Replies:** 21\ **Last updated:** [March 11, 2019, 8:33pm UTC](https://community.openhab.org/t/solved-sending-ntp-time-to-knx-in-openhab2/23612 "2019-03-11T20:33:03Z")
Hi, the old NTP binding could be configured to automatically send time updates to KNX using: DateTime Date "Date and Time: \[%1$tA, %1$td.%1$tm.%1$tY %1$tT\]" (Status) { ntp="Europe/Berlin:de\_DE", knx="11.001:1… --- ## [NTP Binding - Formatting DateTime](https://community.openhab.org/t/ntp-binding-formatting-datetime/62902)
**Author:** [@Burzin\_Sumariwalla](https://community.openhab.org/u/Burzin_Sumariwalla)\ **Replies:** 6\ **Last updated:** [January 6, 2019, 5:17pm UTC](https://community.openhab.org/t/ntp-binding-formatting-datetime/62902 "2019-01-06T17:17:24Z")
Hello, I’m using openHAB 2.4 and looking at the NTP binding documentation here: My things and items are defined per the documentation and listed below. ntp.things ntp:ntp:demo \[ hostname="us.pool.ntp.org", refresh… --- ## [How to send local hour as a number (when it changes) from raspberry to esp8266](https://community.openhab.org/t/how-to-send-local-hour-as-a-number-when-it-changes-from-raspberry-to-esp8266/39794)
**Author:** [@tasosmich](https://community.openhab.org/u/tasosmich)\ **Replies:** 11\ **Last updated:** [February 11, 2018, 4:39am UTC](https://community.openhab.org/t/how-to-send-local-hour-as-a-number-when-it-changes-from-raspberry-to-esp8266/39794 "2018-02-11T04:39:22Z")
Hello, i am a beginner and i have some unsolved problems, so any help would be much appreciated. I want to send (through mqtt) from raspberry the local hour as a number to a remote esp8266 every time it changes. i have… --- ## [NTP binding - can't create an item representing the abbreviation for the time zone](https://community.openhab.org/t/ntp-binding-cant-create-an-item-representing-the-abbreviation-for-the-time-zone/39688)
**Author:** [@emme-oh](https://community.openhab.org/u/emme-oh)\ **Replies:** 9\ **Last updated:** [February 13, 2018, 3:33pm UTC](https://community.openhab.org/t/ntp-binding-cant-create-an-item-representing-the-abbreviation-for-the-time-zone/39688 "2018-02-13T15:33:04Z")
Hi, I use the NTP binding in my Openhab2 system and it works in a perfect way if I set the two items linked to the two channels as described in the documentation. In this way I can insert both a DateTime and a String it… --- ## [NTP Binding Problem in my OH2.2](https://community.openhab.org/t/ntp-binding-problem-in-my-oh2-2/37230)
**Author:** [@Hotte](https://community.openhab.org/u/Hotte)\ **Replies:** 1\ **Last updated:** [December 13, 2017, 8:14am UTC](https://community.openhab.org/t/ntp-binding-problem-in-my-oh2-2/37230 "2017-12-13T08:14:00Z")
Hi, I have updated to OH2.2 a few weeks ago and noticed now that my NTP Binding doesn’t work anymore. I got the following message in the logs. 2017-12-12 20:51:59.169 \[ERROR\] \[ore.common.registry.AbstractRegistry\] - C… --- ## [OpenHAB 2 Wrong time after power failure](https://community.openhab.org/t/openhab-2-wrong-time-after-power-failure/36194)
**Author:** [@crf](https://community.openhab.org/u/crf)\ **Replies:** 4\ **Last updated:** [November 14, 2017, 1:01pm UTC](https://community.openhab.org/t/openhab-2-wrong-time-after-power-failure/36194 "2017-11-14T13:01:32Z")
Hi. I am using OpenHAB 2.1.0-1 on RPI2. After a power failure in the whole house, the Time and Date gets confused! That is, totally wrong. When I do a normal reboot or power OFF/ON cycle, the date is set correctly. I… --- ## [NTP/Astro Binding - several items possible in different time zones?](https://community.openhab.org/t/ntp-astro-binding-several-items-possible-in-different-time-zones/33987)
**Author:** [@RolandS](https://community.openhab.org/u/RolandS)\ **Replies:** 3\ **Last updated:** [September 9, 2017, 2:12pm UTC](https://community.openhab.org/t/ntp-astro-binding-several-items-possible-in-different-time-zones/33987 "2017-09-09T14:12:57Z")
I want to display not only the local date/time - but also the date/time in several different other timezones. But up to now I didn’t get it running - the local time is added automatically as thing to PaperUI after insta… --- ## [OH 2.2 binding installation - no discovery possible](https://community.openhab.org/t/oh-2-2-binding-installation-no-discovery-possible/31851)
**Author:** [@Dries](https://community.openhab.org/u/Dries)\ **Replies:** 2\ **Last updated:** [July 19, 2017, 6:29am UTC](https://community.openhab.org/t/oh-2-2-binding-installation-no-discovery-possible/31851 "2017-07-19T06:29:03Z")
Hi, I installed the NTP binding using PaperUI. The installation was successfull (according to PaperUI). According to the documentation, the NTP-thing is created by using Discovery. So I went to “inbox” and then “search… --- ## [NTP: how to show Week in year?](https://community.openhab.org/t/ntp-how-to-show-week-in-year/25911)
**Author:** [@chzimm](https://community.openhab.org/u/chzimm)\ **Replies:** 1\ **Last updated:** [March 31, 2017, 4:55pm UTC](https://community.openhab.org/t/ntp-how-to-show-week-in-year/25911 "2017-03-31T16:55:25Z")
Hi, I try to show the “Week in year” on my sitemap. But my itemconfig dosn’t work. Regarding tohttp://docs.oracle.com/javase/6/docs/api/java/text/SimpleDateFormat.html I tried: DateTime CurrentKW “Kalenderwoche:… --- ## ["There is no existing NTP binding configuration =\> refresh cycle aborted!"](https://community.openhab.org/t/there-is-no-existing-ntp-binding-configuration-refresh-cycle-aborted/16309)
**Author:** [@GeertVc](https://community.openhab.org/u/GeertVc)\ **Replies:** 2\ **Last updated:** [November 8, 2016, 5:17pm UTC](https://community.openhab.org/t/there-is-no-existing-ntp-binding-configuration-refresh-cycle-aborted/16309 "2016-11-08T17:17:09Z")
When launching openHAB in debug mode on a Raspberry Pi (start\_debug.sh), I see the following message: There is no existing NTP binding configuration =\> refresh cycle aborted! I do have the NTP binding in my addons dire… --- ## [NTP Time Zone problem and time sinchronization](https://community.openhab.org/t/ntp-time-zone-problem-and-time-sinchronization/11569)
**Author:** [@Jaghova](https://community.openhab.org/u/Jaghova)\ **Replies:** 7\ **Last updated:** [June 27, 2016, 8:11am UTC](https://community.openhab.org/t/ntp-time-zone-problem-and-time-sinchronization/11569 "2016-06-27T08:11:28Z")
Hi, I just upgraded OH to Beta3 and it has some strange behavior. -OH2 running on a Raspberry Pi OS configured with correct local time (For example 16:00) (UTC+2) -My NTP thing is correctly configured (I also tried w…