| 2024 | Saturday |
| 2025 | Sunday |
| 2026 | Monday |
| 2027 | Tuesday |
| 2028 | Thursday |
| 2029 | Friday |
| 2030 | Saturday |
| 2031 | Sunday |
| 2032 | Tuesday |
December 21, 2025 fell on a Sunday.
December 21, 2025 has passed; see the countdown page for the next occurrence.
December 21, 2025 was a Sunday, which is a weekend day.