What end date should I expect on my immigration stamp when entering Thailand with DTV?

The user has recently received approval for a DTV visa in Hanoi and is seeking guidance on what end date to expect on the immigration stamp upon re-entry to Thailand. Specifically, they are curious if it should reflect a 180-day validity period from their entry date. Comments from the community suggest calculating the end date based on the arrival date and note that variations of a day or two may occur in the stamping process. Additional inquiries about the approval duration for the DTV visa are also present.