I have a city name or actually it is three letters city code such as NYC, BKK, HKG. I need to convert local time of a city to UTC time, so that I use calendar class and timezone id of that city right?
I don't know how to find the timezone id of a city. Does anyone know it? Thanks in advance
You can get all the all the available TimeZone IDs supported:
final String[] timezoneIDs = TimeZone.getAvailableIDs();
for (int i = 0; i < timezoneIDs.length; i++) System.out.println(timezoneIDs[i]);
I.e:
America/New_York
Asia/Bangkok
Asia/Hong_Kong
> A 3 letter combination would allow 17576 unique
> entries, I have no idea if there are more cities than
> that in the world, the system works for international
> airports, and most cities have at least one, so I
> would assume there are fewer cities than that.
Do you say that most cities have an international airport? Hmm.. Sweden has less than 10 international airports, but we have more cities than that. There are also city names which exists in more than one country e.g. Stockholm (Sweden and USA)
Kaj
> A 3 letter combination would allow 17576 unique
> entries, I have no idea if there are more cities than
> that in the world, the system works for international
> airports, and most cities have at least one, so I
> would assume there are fewer cities than that.
Well, ICAO uses four letters now. Every three-letter IATA airport designation e.g. in the US was prefixed with a 'K'.
> When did they do that? :-( all those cool ones like
> LAX are now KLAX?
I don't know, but must have been a while ago already. KLAX and KATL and KJFC. But I guess since the non-flying folks never get into touch with ICAO codes, nobody noticed. Travelling agencies and suitcase tags stick with the IATA designations.
