The winter holiday is approaching, and people will travel and enter restaurants and entertainment venues, at which time it is likely that they will need to show a vaccine certificate. People who want to show that they are fully vaccinated on Thanksgiving, Hanukkah (Jewish holiday) or Christmas need to hurry up.

Image source: Associated Press
According to pix11, full vaccination requires advance planning. Of the three vaccines available in the United States, Pfizer and Modena require two doses before and after, with a few weeks between the first and second doses.
Here's how long it takes to get from the first dose to full vaccination:
Moderna: Six weeks (28 days apart for two doses)
Pfizer: five weeks (21 days apart for two doses)
Johnson & Johnson: 2 weeks (only a single dose required)
To be deemed to have been vaccinated in time for the holidays, you must receive your first dose of Moderna or Pfizer or a single dose of Johnson & Johnson by the following dates:
Thanksgiving Day (25 November)
October 14: Moderna
October 21: Pfizer
November 11: Johnson & Johnson
Hanukkah (starts on November 28)
October 17: Moderna
October 24: Pfizer
November 14: Johnson & Johnson
Christmas Day (25 December)
November 13: Moderna
November 20: Pfizer
December 11: Johnson & Johnson
Compile: V