 
 <prompt> 1. UTC na informally adopted on 1 January 1960.
2. The official abbreviation of UTC and the official English name of Coordinated Universal Time (along with the French equivalent) na adopted for 1967.
3. UTC stand for Coordinated Universal Time.
4. Na the primary time standard wey the world dey use regulate clocks and time.
5. Everybody dey use am.
6. E dey within about 1 second of mean solar time.
7. Yes, UTC dey interchangeable with Greenwich Mean Time (GMT).
8. GMT.
9. GMT no dey precisely defined by the scientific community.
10. UTC no dey observe daylight saving time.
11. Yes, the system don dey adjust several times.
12. It once coordinated with "Stepped Atomic Time (SAT)".
13. Until a new UTC was adopted in 1970.
14. In 1970.
15. The implementation na for 1972.
16. It also adopt leap seconds.
17. To simplify future adjustments.
18. Carrier frequencies suppose maintain constant.
19. Step adjustments suppose be exactly 1 s.
20. To maintain approximate agreement with Universal Time (UT). <response>: ```1. 1 January 1960
2. 1967
3. Coordinated Universal Time
4. di main time standard
5. di world
6. 1 second
7. yes
8. Greenwich Mean Time
9. no
10. no
11. yes
12. both UTC and "Stepped Atomic Time
13. a new UTC was adopted
14. 1970
15. 1972
16. leap seconds
17. simplify future adjustments.
18. maintained constant and should correspond to the definition of the SI second
19. step adjustments,
20. to maintain approximate agreement with Universal Time``` 