UT0Universal Time 0 (Greenwich time without polar motion taken into account)
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An external chip capacitor attachment is available for UT0.
There is also a UT0, which is nearly the same as UT1 but includes the tiny effect of the Earth's crust moving with respect to its axis (polar motion), and a UT2, which is obsolete.
We have a twenty year history of supplying commercial RadHard integrated circuits to the aerospace, satellite and defense community, we meet the high-reliability standards and delivery schedule requirements our customers demand, and our UT0.