Has any got a decent rebuttal for the claim that our calendar is now out by 11 years because of the change from the Gregorian to the Julian Calendar?

I have also been confused because so many claims of corrected calendars are out there.

Lately, this one makes me think it has a corrected version that may help you brother.
Peace.

https://aroodawakening.tv/biblical-hebrew-calendar/

"Biblical Calendar
Astronomically and Agriculturally Corrected
This one-of-a-kind calendar uses data from NASA and pinpoint-accurate biblical history to calculate time the way Yeshua did."

@Andrew Hall

We have not come across one calendar expert that would suggest any issues of the sort with the Gregorian calendar. The conversion to Gregorian to Julian lost 10 days, but that was the point of the conversion. The days of the week were consistent and were not interrupted. Calendar experts have high agreement/confidence and little contention with the Gregorian year count. The years are anchored to known celestial events and year counts for various kings and related ancient historical documentations.

Thanks