December calendar| Day | December | Day of the year | Week number of year |
|---|
| Tuesday | Dec 1, 2099 | 334 | 49 |
| Wednesday | Dec 2, 2099 | 335 | 49 |
| Thursday | Dec 3, 2099 | 336 | 49 |
| Friday | Dec 4, 2099 | 337 | 49 |
| Saturday | Dec 5, 2099 | 338 | 49 |
| Sunday | Dec 6, 2099 | 339 | 49 |
| Monday | Dec 7, 2099 | 340 | 50 |
| Tuesday | Dec 8, 2099 | 341 | 50 |
| Wednesday | Dec 9, 2099 | 342 | 50 |
| Thursday | Dec 10, 2099 | 343 | 50 |
| Friday | Dec 11, 2099 | 344 | 50 |
| Saturday | Dec 12, 2099 | 345 | 50 |
| Sunday | Dec 13, 2099 | 346 | 50 |
| Monday | Dec 14, 2099 | 347 | 51 |
| Tuesday | Dec 15, 2099 | 348 | 51 |
| Wednesday | Dec 16, 2099 | 349 | 51 |
| Thursday | Dec 17, 2099 | 350 | 51 |
| Friday | Dec 18, 2099 | 351 | 51 |
| Saturday | Dec 19, 2099 | 352 | 51 |
| Sunday | Dec 20, 2099 | 353 | 51 |
| Monday | Dec 21, 2099 | 354 | 52 |
| Tuesday | Dec 22, 2099 | 355 | 52 |
| Wednesday | Dec 23, 2099 | 356 | 52 |
| Thursday | Dec 24, 2099 | 357 | 52 |
| Friday | Dec 25, 2099 | 358 | 52 |
| Saturday | Dec 26, 2099 | 359 | 52 |
| Sunday | Dec 27, 2099 | 360 | 52 |
| Monday | Dec 28, 2099 | 361 | 53 |
| Tuesday | Dec 29, 2099 | 362 | 53 |
| Wednesday | Dec 30, 2099 | 363 | 53 |
| Thursday | Dec 31, 2099 | 364 | 53 |
