Worlds R4 and S3-C have been reset. The time will be paused in both worlds until Saturday, Jan 10 at 07:00 UTC (2:00am EST).
Please note that each player can have a maximum of 1 airline across all three S3 worlds, so as long as you own an airline in S3-A or S3-B, you cannot start a new airline in S3-C.
Good luck and have fun!