Missing data early Sunday morning

I see a gap in my data from early this-morning. Was this expected?

Sunday 25th October

Related to the end of BST?

Yes I have missing data too.... I assume it's the clock change from BST to GMT at around 2am....

The yellow on my graph is upside down for 1 hour

https://www.thinkbroadband.com/broadband/monitoring/...

Thinking about it there was an extra hour last night - so I would n't expect to see missing data, I'd expect to see an extra hour of data in the day. Looking closely at the times along the bottom that are usually every 2 hours there appears to be only a one hour gap from 12am-1am, which might account for a 'missing' hour. But I believe the rendering is wrong; or I'm not understanding what is being rendered.

In reply to a post by rmay_uk:

I see a gap in my data from early this-morning. Was this expected?

Sunday 25th October

Already on it.
No.. I specifically asked that we had made sure daylight saving time is properly handled but it messed that up
We still have the data on the firebricks so trying to see if we can recover it.

It's probably an error in how we push the data to Clickhouse. On my data I see:
2026-10-25T00:58:20+01:00
2026-10-25T01:00:00+00:00

It should be
2026-10-25T01:58:20+01:00 .. first 1-2am (BST) and trigger an hour later
2026-10-25T01:00:00+00:00 .. second 1-2am (GMT) period

seb