[tz] Politics of TZ changes
eggert at cs.ucla.edu
Tue May 13 21:30:06 UTC 2014
On 05/13/2014 01:11 PM, Zoidsoft wrote:
> I wonder how they keep aircraft from landing on top of each other on
> the runway when the skip forward or back?
The U.S. Federal Aviation Administration uses UTC for all operations.
There is a stylized protocol for communicating times via voice radio,
e.g., 19:20 UTC is transmitted as "won nin-er too ze-ro". Controllers
can also communicate local time upon request and this must be stated
clearly, e.g., 18:30 local time might be transmitted "wun ait tree ze-ro
local". If there's any ambiguity about what "local" means, pilots and
controllers are expected to be aware of and to handle it.
For more, see:
Federal Aviation Administration. Aeronautical Information Manual
(2012-02-09, updated through 2013-08-22). Section 4-2-12 "Time".
More information about the tz