In this challenge, the goal is to calculate what time it is in two different cities. You're given a string city_a and the related string timestamp (time in city_a) with the date formatted in full U.S. notation, as in this example:
"July 21, 1983 23:01"
You have to return a new timestamp with date and corresponding time in city_b, formatted as in this example:
"1983-7-22 23:01"
See the table below for a list of given cities and their GMT (Greenwich Mean Time) hours offsets.
| GMT | City |
|---|---|
| - 08:00 | Los Angeles |
| - 05:00 | New York |
| - 04:30 | Caracas |
| - 03:00 | Buenos Aires |
| 00:00 | London |
| + 01:00 | Rome |
| + 03:00 | Moscow |
| + 03:30 | Tehran |
| + 05:30 | New Delhi |
| + 08:00 | Beijing |
| + 10:00 | Canberra |
time_difference("Los Angeles", "April 1, 2011 23:23", "Canberra") ➞ "2011-4-2 17:23"
# Can be a new day.
time_difference("London", "July 31, 1983 23:01", "Rome") ➞ "1983-8-1 00:01"
# Can be a new month.
time_difference("New York", "December 31, 1970 13:40", "Beijing") ➞ "1971-1-1 02:40"
# Can be a new year.
0 is needed in the returned timestamp when they're a single digit.