enter image description here

I want to know what's the red stamp with the date for and the other stamp that has the date until apr 27,2017. They ask me how long I'm going to stay and I said a month. If there's any changes with length of stay. Do I have to leave on the 27 of April or I can stay until the usual validity of stay which is 6 months?

  • 5
    I'm not seeing the April stamp, though maybe it's just how it looks in your picture. To my eyes, you have a second "MAR 27" stamp to mark that your visa has been used. I can make out the letters "AR" in the month on the second stamp, which wouldn't make sense if it was "APR" for April, but fits with "MAR" for March. Commented Mar 28, 2017 at 4:58
  • In other words, where is the stamp that says "April 27?" Commented Mar 28, 2017 at 5:03
  • @ZachLipton that's the correct answer (that Ivy has misread the endorsement stamp); you should post it as such.
    – phoog
    Commented Mar 28, 2017 at 5:08

3 Answers 3


As best I can tell from the photo, you are misreading the stamp. There are two stamps:

  • The normal admission stamp showing you entered the US in B-2 status on March 27 and are admitted for the usual six months, until September 26
  • A second stamp across the face of the visa foil to mark your visa as used, which is just the normal admission stamp showing March 27

I cannot see a stamp that say April 27. In particular, I can clearly make out the letters "AR" in the month section of the second stamp, which would not be there if it said "APR" for "April." Because of the fold of your passport, the letter "M" is missing from "MAR" for "March." This stamp has no particular extra meaning.

As such, you were admitted on March 27th for six months duration.

It's always a good idea, as phoog recommends, to check your electronic immigration record at i94.cbp.dhs.gov, to confirm that you were admitted for six months.

It's worth mentioning that you could face further questioning on future trips to the US if you use your visa in a significantly different way than what you said your intentions were. If you said you were coming to the US for a week to attend a conference, and then actually stay six months, you might be asked to explain the reason for this.


That's very common. They have the stamp marked for 6 months from today's date and they stamp all passports the same, unless exceptions.

They ask you for long are you going to stay in the US to make sure you're not going to work and sounds reasonable for the reason you're going. If everything is OK, they stamp with 6 months.

I'm sure you can stay there until Sept 26 at midnight.

One exception when they do not mark the 6 months is for example (this happened to me), when you go out of the US and come back in. For example:

  • 3 months in the US
  • Leave for one week to Canada/Mexico
  • Return to the US

In my case, I stayed for 5 months in total. 3 months before and 2 months after a short trip to Mexico.

Because many people leave the country for a few hours/days to extend their passport valid period (ie, 6 months + 6 months), when you return they might not want to extend your stay for another 6 months. In my case they stamped it with the initial 'Valid Until' they put the first time I went in.

Photo of my passport with 2 stamps and same date:

passport stamps

  • When you returned from your short trip to Mexico, was your passport stamped at the US border, and, if so, what did the stamp say?
    – phoog
    Commented Mar 28, 2017 at 16:30
  • 1
    @phoog photo added to the answer.
    – DiegoJ
    Commented Mar 28, 2017 at 17:59
  • 1
    You were re-admitted into the US under a process call "Automatic Revalidation". Google will find more details if you're interested.
    – Doc
    Commented Mar 28, 2017 at 19:36
  • @Doc thank you! May I ask how do you know? What are those R and NOPP (not sure what the first letter is)? Thanks!
    – DiegoJ
    Commented Mar 28, 2017 at 20:43
  • 2
    That is "VIOPP", not NOPP. It means visa in other passport. Doc explained the R already. Commented Mar 28, 2017 at 23:53

In general, to avoid any confusion regarding US passport stamp and period of admission, after every entry to the US it's advisable to download your electronic I-94 from the CBP website and keep it as a permanent record. Normally the electronic I-94 and the passport stamp should both show the same details:

  • Date of Entry
  • Class of Admission (which is usually the same as your visa type, in your case B-2)
  • Admit Until Date

Since either the passport stamp or the electronic I-94 can be used as legal proof of your admission to the US, it's a good idea to make sure they're the same. This can also assuage any doubt in the case of ambiguity on the passport stamp.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .