This page lists all lunar phase events in 2011: New Moon, First Quarter, Full Moon, and Last Quarter.
Dates are based on the UTC time zone. Phases are calculated using the synodic month (approximately 29.53058867 days). Dates are accurate to within a day; for exact times consult an astronomical almanac.
Interesting facts for 2011
- 2011 has 12 full moons.
- Easter 2011: Sunday, April 24, 2011. Easter falls on the first Sunday after the first full moon on or after March 21. That full moon is on April 17.
| Start date | Phase | Day of year | Note |
|---|---|---|---|
| January 4, 2011 (Tue) | New Moon | 4 | |
| January 11, 2011 (Tue) | First Quarter | 11 | |
| January 18, 2011 (Tue) | Full Moon | 18 | |
| January 26, 2011 (Wed) | Last Quarter | 26 | |
| February 2, 2011 (Wed) | New Moon | 33 | |
| February 9, 2011 (Wed) | First Quarter | 40 | |
| February 17, 2011 (Thu) | Full Moon | 48 | |
| February 24, 2011 (Thu) | Last Quarter | 55 | |
| March 4, 2011 (Fri) | New Moon | 63 | |
| March 11, 2011 (Fri) | First Quarter | 70 | |
| March 18, 2011 (Fri) | Full Moon | 77 | March equinox (March 19) |
| March 26, 2011 (Sat) | Last Quarter | 85 | |
| April 2, 2011 (Sat) | New Moon | 92 | |
| April 10, 2011 (Sun) | First Quarter | 100 | |
| April 17, 2011 (Sun) | Full Moon | 107 | Easter (April 24) |
| April 24, 2011 (Sun) | Last Quarter | 114 | |
| May 2, 2011 (Mon) | New Moon | 122 | |
| May 9, 2011 (Mon) | First Quarter | 129 | |
| May 17, 2011 (Tue) | Full Moon | 137 | |
| May 24, 2011 (Tue) | Last Quarter | 144 | |
| May 31, 2011 (Tue) | New Moon | 151 | |
| June 8, 2011 (Wed) | First Quarter | 159 | |
| June 15, 2011 (Wed) | Full Moon | 166 | June solstice (June 20) |
| June 22, 2011 (Wed) | Last Quarter | 173 | |
| June 30, 2011 (Thu) | New Moon | 181 | Aphelion, farthest point from Sun (~July 4) |
| July 7, 2011 (Thu) | First Quarter | 188 | |
| July 15, 2011 (Fri) | Full Moon | 196 | |
| July 22, 2011 (Fri) | Last Quarter | 203 | |
| July 29, 2011 (Fri) | New Moon | 210 | |
| August 6, 2011 (Sat) | First Quarter | 218 | |
| August 13, 2011 (Sat) | Full Moon | 225 | |
| August 20, 2011 (Sat) | Last Quarter | 232 | |
| August 28, 2011 (Sun) | New Moon | 240 | |
| September 4, 2011 (Sun) | First Quarter | 247 | |
| September 12, 2011 (Mon) | Full Moon | 255 | |
| September 19, 2011 (Mon) | Last Quarter | 262 | September equinox (September 22) |
| September 26, 2011 (Mon) | New Moon | 269 | |
| October 4, 2011 (Tue) | First Quarter | 277 | |
| October 11, 2011 (Tue) | Full Moon | 284 | |
| October 19, 2011 (Wed) | Last Quarter | 292 | |
| October 26, 2011 (Wed) | New Moon | 299 | |
| November 2, 2011 (Wed) | First Quarter | 306 | |
| November 10, 2011 (Thu) | Full Moon | 314 | |
| November 17, 2011 (Thu) | Last Quarter | 321 | |
| November 24, 2011 (Thu) | New Moon | 328 | |
| December 2, 2011 (Fri) | First Quarter | 336 | |
| December 9, 2011 (Fri) | Full Moon | 343 | |
| December 17, 2011 (Sat) | Last Quarter | 351 | December solstice (December 21) |
| December 24, 2011 (Sat) | New Moon | 358 | |
| December 31, 2011 (Sat) | First Quarter | 365 |
Also see Week numbers for 2011 and Day numbers for 2011