If you suspect that your IC7300 is off of the dial frequency, it is easy to check, and set, with your regional broadcast time standard. I am in North America, and use WWV in this video, but you could use WWVH, CHU or other shortwave time standards.

WWV on 2.5, 5, 10, 15 and 20MHz
WWVH on 2.5, 5, 10 and 15MHz
CHU on 3.330,7.850 and 14.670 MHz