Beijing Time (China Standard Time, CST) is typically 13 hours ahead of Montreal Time (Eastern Standard Time, EST) during standard time.
However, it’s important to note that Montreal, Canada, observes Daylight Saving Time (DST), which means the time is adjusted by one hour during the DST period. When Montreal is on DST (Eastern Daylight Time, EDT), which usually starts on the second Sunday in March and ends on the first Sunday in November, the time difference is 12 hours between Beijing and Montreal.
So, to determine the exact time difference between Beijing and Montreal at any given moment, you’ll need to consider whether Montreal is currently on standard time (EST) or daylight saving time (EDT).