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Lunar phase today Boulder

Lunar Day 34

Moon phase today September 9, 2025

What is moon today in Boulder?

Today's lunar phase in Boulder, United States, the moon is in 🌖 the Waning Gibbous phase, with 93.23% illumination, with an age of 17.24 days. The current distance between Boulder, United States and the moon is 366,029.61km.

Content:

Moon phase today

Note: all moon data below it's analytic based on this location coordinates latitude 40.0175 and longitude -105.2797 also base on Time zone America/Denver because of that and for higher accuracy you will find it different from place to place.
Tuesday, September 9, 2025
05:37:29 PM
Lunar Day 34
Waning Gibbous
93.23%
Boulder
United States
  • Location:
    United States, Boulder
  • Moon phase:
    🌖 Waning Gibbous
  • Lunar day (Moon Age):
    17.24
  • Illumination:
    93.23%
  • MoonRise/MoonSet:
    20:17/08:49
  • Altitude:
    32.22°
  • Period:
    🕑 11 Hours and 28 Minutes
  • Angular diameter:
    31.17°
  • Distance to Boulder:
    366,029.61km
  • Next full Moon:
    October 6, 2025 at 6:16 PM
  • Next full Moon countdown:
    27 Days, 0 Hours and 38 Minutes

Upcoming moon phases

September 10, 2025
Lunar Day 17
Waning Gibbous
Illumination: 91.55%
Rise
20:45
Set
10:05
September 11, 2025
Lunar Day 18
Waning Gibbous
Illumination: 83.82%
Rise
21:18
Set
11:24
September 12, 2025
Lunar Day 19
Waning Gibbous
Illumination: 74.26%
Rise
21:59
Set
12:42
September 13, 2025
Lunar Day 20
Last Quarter
Illumination: 63.52%
Rise
22:49
Set
13:57
September 14, 2025
Lunar Day 21
Last Quarter
Illumination: 52.23%
Rise
23:50
Set
15:04
September 15, 2025
Lunar Day 22
Last Quarter
Illumination: 41.02%
Rise
00:00
Set
16:00
September 16, 2025
Lunar Day 24
Waning Crescent
Illumination: 30.44%
Rise
00:57
Set
16:44

Current moon cycle

It's common to give the moon four phases names (Moon Cycle), it's like they divide the moon phases to forth different times, First one is the new moon, second one is the first quarter, third one full moon, fourth one and the last it's the last quarter, In the below we will list for you the current moon cycles with the four times that we talked about
PhaseStart DateMoonriseMoonrsetIlluminationAge
🌑 New MoonSunday, August 24, 202507:4620:291.07%0.98
🌓 First QuarterFriday, August 29, 202512:5722:2531.44%5.59
🌕 Full MoonSaturday, September 6, 202519:0305:0897.05%13.14
🌗 Last QuarterSaturday, September 13, 202522:4913:5763.52%20.86

Moon Phase Calendar for September, 2025

SundayMondayTuesdayWednesdayThursdayFridaySaturday
 
1First Quarter🌓 59.48%Age 8.28
2First Quarter🌓 68.82%Age 9.2
3Waxing Gibbous🌔 77.65%Age 10.14
4Waxing Gibbous🌔 85.6%Age 11.11
5Waxing Gibbous🌔 92.22%Age 12.11
6Full Moon🌕 97.05%Age 13.14
7Full Moon🌕 99.65%Age 14.21
8Full Moon🌕 99.67%Age 15.31
9Full Moon🌕 96.94%Age 16.42
10Waning Gibbous🌖 91.55%Age 17.54
11Waning Gibbous🌖 83.82%Age 18.66
12Waning Gibbous🌖 74.26%Age 19.77
13Last Quarter🌗 63.52%Age 20.86
14Last Quarter🌗 52.23%Age 21.94
15Last Quarter🌗 41.02%Age 23
16Waning Crescent🌘 30.44%Age 24.04
17Waning Crescent🌘 20.95%Age 25.06
18Waning Crescent🌘 12.96%Age 26.07
19Waning Crescent🌘 6.76%Age 27.06
20New Moon🌑 2.52%Age 28.03
21New Moon🌑 0.33%Age 28.99
22New Moon🌑 0.18%Age 0.4
23New Moon🌑 1.97%Age 1.32
24Waxing Crescent🌒 5.55%Age 2.24
25Waxing Crescent🌒 10.72%Age 3.14
26Waxing Crescent🌒 17.28%Age 4.03
27Waxing Crescent🌒 24.97%Age 4.92
28First Quarter🌓 33.58%Age 5.81
29First Quarter🌓 42.86%Age 6.71
30First Quarter🌓 52.55%Age 7.62