I think these are the episodes that were (and will be) skipped in the regular cycles due to the Saturday marathon.
Skipped Wednesday, January 20th, 2 PM ET:
The Price is Right 11_4785 (February 4, 1983)
Skipped pre-marathon:
The Price is Right 11_4585 (September 17, 1982)
The Price is Right 11_4591 (September 20, 1982)
The Price is Right 11_4625 (October 15, 1982)
The Price is Right 11_4665 (November 12, 1982)
The Price is Right 11_4674 (November 18, 1982)
The Price is Right 11_4701 (December 6, 1982)
The Price is Right 11_4722 (December 21, 1982)
Skipped post-marathon:
The Price is Right 11_4743 (January 5, 1983)
The Price is Right 11_4751 (January 10, 1983)
The Price is Right 11_4753 (January 12, 1983)
The Price is Right 11_4755 (January 14, 1983)
The Price is Right 11_4785 (February 4, 1983)
The Price is Right 11_4585 (September 17, 1982)
The Price is Right 11_4591 (September 20, 1982)
PENDING SKIP: The Price is Right 11_4625 (October 15, 1982)
PENDING SKIP: The Price is Right 11_4665 (November 12, 1982)
PENDING SKIP on Wednesday, January 27th, 2 AM ET: The Price is Right 11_4674 (November 18, 1982)
The net effect of skipping 18 episodes and spending 24 hours on a marathon means the next full 100-episode cycle will be pushed back 6 hours. That one looks like it should start Friday, 1/29/2021 06:00AM ET and lead right into the fresh episodes when it ends on Tuesday, 2/2/2021 10:00AM ET.