UTC
Coordinated Universal Time
Friday, December 24, 2021
Christmas Eve
| Los Angeles | −8 hours | −8 hours |
| Chicago | −6 hours | −6 hours |
| New York | −5 hours | −5 hours |
| Toronto | −5 hours | −5 hours |
| São Paulo | −3 hours | −3 hours |
| London | 0 | |
| UTC | 0 | |
| Lagos | +1 hours | |
| Paris | +1 hours | |
| Zurich | +1 hours | |
| Cairo | +2 hours | |
| Johannesburg | +2 hours | |
| Istanbul | +3 hours | |
| Moscow | +3 hours | |
| Dubai | +4 hours | |
| Mumbai | +5.5 hours | |
| Hong Kong | +8 hours | |
| Shanghai | +8 hours | |
| Singapore | +8 hours | |
| Tokyo | +9 hours | |
| Sydney | +11 hours |