Comment by smingo

Chinese New Year falls between 21 January and 20 February. This would be somewhere between week 3 and week 8.

Some ISO 8601 week numbers for CNY:

2022 CNY fell on Feb 1 , which is Week 5

2023 CNY fell on Jan 22, which is Week 3

2024 CNY fell on Feb 10, which is Week 6

2025 CNY fell on Jan 29, which is Week 5