[COFF] Manipulating time_t values (was: Unix half-billion years old 1985)

[Tony Finch]

Fans of time_t numerology might like my silly palindromic twitter bots,

https://twitter.com/time_t_emit
https://twitter.com/time_x_emit
https://twitter.com/time_o_emit
https://twitter.com/time_b_emit

Tony.
-- 
f.anthony.n.finch  <dot at dotat.at>  http://dotat.at/
Thames, Dover, East Wight: Cyclonic 3 to 5, becoming northerly 5 to 7 later.
Slight or moderate. Thundery showers. Good, occasionally moderate.