| Centuries: | 4th century · 5th century · 6th century |
| Decades: | 390s 400s 410s 420s 430s 440s 450s |
| Years: | 425 426 427 428 429 430 431 |
| 428 by topic | |
| Politics | |
| State leaders - Sovereign states | |
| Birth and death categories | |
| Births - Deaths | |
| Establishment and disestablishment categories | |
| Establishments - Disestablishments | |
| Gregorian calendar | 428 CDXXVIII |
| Ab urbe condita | 1181 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1416 – -1415 |
| Berber calendar | 1378 |
| Buddhist calendar | 972 |
| Burmese calendar | -210 |
| Byzantine calendar | 5936 – 5937 |
| Chinese calendar | 丁卯年十一月廿八日 (3064/3124-11-28) — to —
戊辰年十一月初九日(3065/3125-11-9) |
| Coptic calendar | 144 – 145 |
| Ethiopian calendar | 420 – 421 |
| Hebrew calendar | 4188 – 4189 |
| Hindu calendars | |
| - Vikram Samvat | 483 – 484 |
| - Shaka Samvat | 350 – 351 |
| - Kali Yuga | 3529 – 3530 |
| Holocene calendar | 10428 |
| Iranian calendar | 194 BP – 193 BP |
| Islamic calendar | 200 BH – 199 BH |
| Japanese calendar | |
| Korean calendar | 2761 |
| Thai solar calendar | 971 |
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