Section B: UK Visa Processing Time after Biometrics The processing time for a UK visa application officially begins once an applicant has submitted their biometric information. This is done in one of two ways: either using the Immigration ID Check app, or by attending an in-person appointment....
that confirms the above guidance. Look for the question on that page that says “What happens to my DS-160 if I select a U.S. Embassy or Consulate where I will be applying for my visa, but end up making an interview appointment instead at another U.S. Embassy or Consulate?” ...
You can also have a cell tower set the time, but it requires you have a cell site simulator. It's not a normal piece of hardware to have lying around, but you never know who has what equipment. You could use an SDR to make a cell tower, which is what B...