Empathy List Archives

JA

Jürgen Appel

Wed, Aug 30, 2023 7:32 AM

Hej folks,

does anybody have some background information on what's currently going on
with Galileo's system time GST?

During the last few days GST-UTC accumulated almost 20 ns of offset, and the
broadcasted utc-offsets have been showing consistently the wrong drifts after
each update during the last 5 days, indicating that this behavior is not
really going as planned...

Is there any official announcement / status website, that I don't know about,
that offers an explanation?

Best regards,
Jürgen Appel

Hej folks, does anybody have some background information on what's currently going on with Galileo's system time GST? During the last few days GST-UTC accumulated almost 20 ns of offset, and the broadcasted utc-offsets have been showing consistently the wrong drifts after each update during the last 5 days, indicating that this behavior is not really going as planned... Is there any official announcement / status website, that I don't know about, that offers an explanation? Best regards, Jürgen Appel

TV

Tom Van Baak

Wed, Aug 30, 2023 10:22 AM

Start with https://galmon.eu/

Read the note about the Grafana dashboard and head to
https://public.galmon.eu/

Scroll down for "Galileo atomic clock jumps" and see if you can make
sense of the strange "0.2 ns" histogram. GPS / Beidou / GLONASS are clean.

/tvb

On 8/30/2023 12:32 AM, Jürgen Appel via time-nuts wrote:

Hej folks,

does anybody have some background information on what's currently going on
with Galileo's system time GST?

During the last few days GST-UTC accumulated almost 20 ns of offset, and the
broadcasted utc-offsets have been showing consistently the wrong drifts after
each update during the last 5 days, indicating that this behavior is not
really going as planned...

Is there any official announcement / status website, that I don't know about,
that offers an explanation?

Best regards,
Jürgen Appel

time-nuts mailing list -- time-nuts@lists.febo.com
To unsubscribe send an email to time-nuts-leave@lists.febo.com

Start with https://galmon.eu/ Read the note about the Grafana dashboard and head to https://public.galmon.eu/ Scroll down for "Galileo atomic clock jumps" and see if you can make sense of the strange "0.2 ns" histogram. GPS / Beidou / GLONASS are clean. /tvb On 8/30/2023 12:32 AM, Jürgen Appel via time-nuts wrote: > Hej folks, > > does anybody have some background information on what's currently going on > with Galileo's system time GST? > > During the last few days GST-UTC accumulated almost 20 ns of offset, and the > broadcasted utc-offsets have been showing consistently the wrong drifts after > each update during the last 5 days, indicating that this behavior is not > really going as planned... > > Is there any official announcement / status website, that I don't know about, > that offers an explanation? > > Best regards, > Jürgen Appel > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com >

B

Björn

Wed, Aug 30, 2023 12:16 PM

Can you find anything at GSC?
Possibly ask them a question?
https://www.gsc-europa.eu/system-service-status/constellation-informati
on
/Björn

Den 30 aug. 2023 09:32 skrev Jürgen Appel via time-nuts
time-nuts@lists.febo.com:

 Hej folks,
 does anybody have some background information on what's currently
 going on
 with Galileo's system time GST?
 During the last few days GST-UTC accumulated almost 20 ns of offset,
 and the
 broadcasted utc-offsets have been showing consistently the wrong
 drifts after
 each update during the last 5 days, indicating that this behavior is
 not
 really going as planned...
 Is there any official announcement / status website, that I don't
 know about,
 that offers an explanation?
 Best regards,
 Jürgen Appel
 _______________________________________________
 time-nuts mailing list -- time-nuts@lists.febo.com
 To unsubscribe send an email to time-nuts-leave@lists.febo.com

Can you find anything at GSC? Possibly ask them a question? https://www.gsc-europa.eu/system-service-status/constellation-informati on /Björn Den 30 aug. 2023 09:32 skrev Jürgen Appel via time-nuts <time-nuts@lists.febo.com>: Hej folks, does anybody have some background information on what's currently going on with Galileo's system time GST? During the last few days GST-UTC accumulated almost 20 ns of offset, and the broadcasted utc-offsets have been showing consistently the wrong drifts after each update during the last 5 days, indicating that this behavior is not really going as planned... Is there any official announcement / status website, that I don't know about, that offers an explanation? Best regards, Jürgen Appel _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe send an email to time-nuts-leave@lists.febo.com

JA

Jürgen Appel

Wed, Aug 30, 2023 12:48 PM

Dear Discussion of precise time and frequency measurement,

On Wednesday, 30 August 2023 12:22:32 CEST Tom Van Baak via time-nuts wrote:

Start with https://galmon.eu/

Read the note about the Grafana dashboard and head to
https://public.galmon.eu/

Scroll down for "Galileo atomic clock jumps" and see if you can make
sense of the strange "0.2 ns" histogram. GPS / Beidou / GLONASS are clean.

Yes, that's also the website where I got the "Galileo GST-UTC offset"
(viewPanel=19) information from. If my interpretation is correct, they seem to
repetitively program the satellites to broadcast a slightly decreasing GST-UTC
offset, while after every day the offset is in fact higher instead of lower,
and they have to step the number up and do the same thing again.

But why?

Cheers,
Jürgen

Dear Discussion of precise time and frequency measurement, On Wednesday, 30 August 2023 12:22:32 CEST Tom Van Baak via time-nuts wrote: > Start with https://galmon.eu/ > > Read the note about the Grafana dashboard and head to > https://public.galmon.eu/ > > Scroll down for "Galileo atomic clock jumps" and see if you can make > sense of the strange "0.2 ns" histogram. GPS / Beidou / GLONASS are clean. > Yes, that's also the website where I got the "Galileo GST-UTC offset" (viewPanel=19) information from. If my interpretation is correct, they seem to repetitively program the satellites to broadcast a slightly decreasing GST-UTC offset, while after every day the offset is in fact higher instead of lower, and they have to step the number up and do the same thing again. But why? Cheers, Jürgen

time-nuts@lists.febo.com

Galileo system time