Standard time (Nov–Mar): 5 hours — Toronto (EST, UTC−5) vs. Glasgow (GMT, UTC+0).
Daylight saving (Mar–Nov): 4 hours — Toronto (EDT, UTC−4) vs. Glasgow (BST, UTC+1).
| Period | Toronto | Glasgow | Difference |
|---|---|---|---|
| Early Nov – Mid Mar | EST (UTC−5) | GMT (UTC+0) | 5 hrs |
| Mid Mar – Late Mar* | EDT (UTC−4) | GMT (UTC+0) | 4 hrs |
| Late Mar – Early Nov | EDT (UTC−4) | BST (UTC+1) | 4 hrs |
| Late Oct – Early Nov* | EDT (UTC−4) | GMT (UTC+0) | 4 hrs |
*Transition weeks when UK and NA switch on different Sundays.
Example: 12:00 PM Toronto in January = 5:00 PM Glasgow. In July = 4:00 PM Glasgow.