Why Vietnam Tet Holiday changes its date from year to year? What will the date be for 2012? Is it ok to travel to Vietnam during that holiday?
Thank you for your questions. Vietnam Tet holiday is calculated based on the Lunar Calendar, which is different from Solar Calendar. Sometimes the Lunar Calendar has 13 months (leap year) instead of 12 months so the date of Tet holiday might change. It often falls into the end of January to early February.
As for your second question, Vietnam Tet Holiday 2012 will be January 23rd, 2012 (Solar Calendar). Most offices will be closed a few days before and after this date so be prepared (for example, please apply for your visa well in advance). Many Vietnamese overseas will return home, and those from the city will come back to the countryside so the traffic volume may be quite large. We suggest you to plan your travel well and book all the necessary flight tickets and tour service to avoid delays.
It will be a delight for you to get to know Tet Holiday - the most important holiday and event of the year for Vietnamese. If you are lucky, you will be invited to a Vietnamese family to enjoy the Tet holiday with them - which will totally change your idea of travel and travelling to Vietnam.
Here are a few reads and articles on the website which might be helpful to you:
Vietnam Lunar Calendar
Vietnam Tet Holiday
What you should know when visiting a Vietnamese family