Are ISO standard and US week numbering systems in sync this year?

No. :(

Most of the world uses the ISO-8601 standard for week numbering. North America, however, uses a different numbering system. These systems don't generate matching week numbers every year, depending on the day of week that starts the year.

Unfortunately, this year(2017) the numbers don't sync up. The 4th of January is a Wednesday, so it's week 1 in the ISO standard, but week 2 in the US.

Future years