Linux default date & time format
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Last update
2024-03-04
2024
03-04
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  1. find your current locale
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locale | grep LC_TIME
# => LC_TIME="en_US.UTF-8"
  1. edit the corresponding file /usr/share/i18n/locales/en_US

  2. change values to your liking:

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d_t_fmt "%a %d %b %Y %T %Z"
d_fmt   "%Y//%m//%d"
t_fmt   "%T"
date_fmt "%a %d %b %Y %T %Z"
  1. regenerate locales and re-login
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locale-gen
update-locale

Source: linuxopsys