Now there is absolutely no need for you to manually calculate the time difference between two different time zones. The Clock Zone app in iPhone will display the time and date of the various time zones. It requires you to select the time zone by clicking on the + symbol at the top right corner.
• You can select any time zone that is desired.
• Choose between Analog or Custom Clock formats.
• Most elegant, beautiful and simple world clock app.
• Available for both iPhone and iPad.