Live Team Ladder not working after 13:00 UK time

I’ve been meaning to ask/mention this for a long time.

I often view our teams live ladder at work, so am not logged, after 13:00 UK time I get the following, note the time it stops functioning changes throughout the year, probably in lines with daylight saving time.

If I’m logged in, it will work fine, but if I’m not logged it I get the above, I think this is something to do with using Australian time, rather than UK time, can this be altered to use the time zone reported by the browser when not logged in?

https://pvoutput.org/ladder.jsp?tid=1661

It’s not just our team, Australian teams work fine, European teams fail with the same result.