Hi Peter 

When selecting a good date and time for the tea ceremony, do we have to complete the whole ceremony in the 2hrs time frame or as long as the ceremony start within the 2 hrs it is good enough. 

If only the start time is important than which activity is considered the start;

1. When the groom leave his house to go to the bride's house

2. When he arrive at the bride's house

3. The tea ceremony at bride's house. (offering tea to the bride's parents) a vietnamese tradition

4. Tea ceremony at groom's house (offer tea to the groom's parents) 

thankyou

These 2 are important.

1. Tea ceremony at bride's house and when the bride leave her house - must be done within the selected auspicious 2 hrs.

2. When the couple enter the groom's house and the tea ceremony at groom's house - must be done within the selected auspicious 2 hrs.

Cheers.