1) "6 months" and "people over 65"

6+6+5 = 17

President Biden

@POTUS

United States government official

The majority of Americans who were fully vaccinated with Pfizer can receive a booster shot at least 6 months after their second shot. This includes people over 65, those with underlying medical conditions, and those in frontline jobs.

10:31 AM · Sep 24, 2021·The White House

https://twitter.com/POTUS/status/1441409994365095949

2) Timestamp 11:06 am 11+6 = 17

President Biden

@POTUS

United States government official

This morning I’m hosting Indian Prime Minister Narendra Modi at the White House for a bilateral meeting. I look forward to strengthening the deep ties between our two nations, working to uphold a free and open Indo-Pacific, and tackling everything from COVID-19 to climate change.

11:06 AM · Sep 24, 2021·The White House

https://twitter.com/POTUS/status/1441418775174258689