Retime function creates new rowtimes going back to 1899

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Poison Idea fan
Poison Idea fan 2023-5-31
编辑： the cyclist 2023-5-31
I have a timetable of data that I am trying to average to two minutes. When I use:
CO2_TT = retime(CO2_TT,'regular','mean','TimeStep',minutes(2));
It creates new row times going back to the year 1899. I've not seen this happen before and I use retime everyday. I have another timetable in the workspace that does not have this error. What would trigger this?
load CO2_TT.mat
CO2_TT = retime(CO2_TT,'regular','mean','TimeStep',minutes(2));

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the cyclist
the cyclist 2023-5-31
编辑：the cyclist 2023-5-31
Ran in:
You have a few dates from 1899 in your input data
load CO2_TT.mat
[minDateTime,indexToMinDatetime] = min(CO2_TT.DateTime)
minDateTime = datetime
31-Dec-1899
indexToMinDatetime = 649
CO2_TT(CO2_TT.DateTime==min(CO2_TT.DateTime),:)
ans = 3×11 timetable
DateTime Time Date co2_ppb hico2 intt cht pres smplfl speed biasv intensity ___________ ____ ____ _______ _____ ____ ___ ____ ______ _____ _____ _________ 31-Dec-1899 NaN NaT NaN NaN NaN NaN NaN NaN NaN NaN NaN 31-Dec-1899 NaN NaT NaN NaN NaN NaN NaN NaN NaN NaN NaN 31-Dec-1899 NaN NaT NaN NaN NaN NaN NaN NaN NaN NaN NaN

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