Upvote:2
The 90/180 rule for Schengen C visa has no start date, and it applies to all C visa. At any day you are in the Schengen area, you you must not have stayed more than 90 days out of the preceding 180 in the area.
- In the 180 days from May 19th to November 14th, you can spend 90 days in Schengen. Your two trips account for 35 days, so you have 55 days left provided you can get a new C visa.
- In the 180 days from May 20th to November 15th, you can spend 90 days in Schengen. Your two trips account for 34 days, so you have 56 days left provided you can get a new C visa.
- And so on.