Best time to call
Beijing is 1 hour behind Tokyo. Here are the call windows that respect both your day in Tokyo (Japan) and theirs in Beijing (China), plus the daylight saving and holiday traps to watch.
11 AM Tokyo
= 10 AM Beijing
11 AM in Tokyo = 10 AM in Beijing, fresh in their morning before the day fills up.
12 PM Tokyo
= 11 AM Beijing
12 PM in Tokyo = 11 AM in Beijing, fresh in their morning before the day fills up.
1 PM Tokyo
= 12 PM Beijing
1 PM in Tokyo = 12 PM in Beijing, right around their lunch, so confirm they are at a desk.
Both cities are loaded with Tokyo as the anchor. Adjust the day or hours to see the overlap shift, including around daylight saving transitions.
Sorted by participants in business hours
Green = inside 9:00–17:00
Beijing is 1 hour behind Tokyo. From your desk in Tokyo, that means your afternoon is still their morning, and the window where both teams are at their desks is narrower than it looks. The cleanest single slot is 11 AM your time, which lands at 10 AM in Beijing.
At 1 hour apart, you have a generous shared working day. Most of your morning lines up with most of theirs, so the choice is less about finding any overlap and more about hitting the callee's best energy. Aim for their mid-morning rather than their lunch or their wind-down.
The recommended slots above are computed against today's offset, which is the safe default. The trap is the twice-a-year daylight saving changeover: Tokyo and Beijing do not necessarily move their clocks on the same weekend, so for a few weeks each spring and autumn the gap can shift by an hour and every recurring invite quietly misfires. If your call is near a transition date, confirm the exact wall-clock time on both ends rather than trusting the difference.
On these dates both Japan and China are likely off, so do not schedule.