Defaults to year, rather than day

[DiscoDuck]

For example if I enter Jan 21 in the cell, it takes it as January 1,
2021.
However my former workplace, it worked fine (i.e. took it as Jan 21,
2004).

How can I change it so it recognizes the number as the day of the
month, as opposed to year?
Going mental,

 

[RWN]

(Using w2k)
Look at the Regional settings in Windows (not Excel)
("Start->Settings->Control Panel-> Regional Options").
There's a Date tab there and whatever you enter there will dictate how
xl handles the date.
(Always seemed somewhat incongruous to me)

 

[DiscoDuck]

Thanks for the reply, Using XP, but found the setting of which you
wrote. But I am not seeing anywhere to change teh default of double
digit being interpreted as a date (instead of a year).