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End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Date#rfc2822

d.rfc2822 → string

This method is equivalent to strftime(‘%a, %-d %b %Y %T %z’).

See also .rfc2822 #prev_year #rfc3339 #prev_month also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1