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Lunar phase today Boulder

Lunar Day 16

Moon phase today September 19, 2026

What is moon today in Boulder?

Today's lunar phase in Boulder, United States, the moon is in 🌓 the First Quarter phase, with 62.88% illumination, with an age of 8.61 days. The current distance between Boulder, United States and the moon is 404,965.31km.

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.
Saturday, September 19, 2026
11:46:08 PM
Lunar Day 16
First Quarter
62.88%
Boulder
United States
  • Location:
    United States, Boulder
  • Moon phase:
    🌓 First Quarter
  • Lunar day (Moon Age):
    8.61
  • Illumination:
    62.88%
  • MoonRise/MoonSet:
    15:26/00:00
  • Altitude:
    -34.98°
  • Period:
    🕑 8 Hours and 34 Minutes
  • Angular diameter:
    28.18°
  • Distance to Boulder:
    404,965.31km
  • Next full Moon:
    September 25, 2026 at 6:19 PM
  • Next full Moon countdown:
    5 Days, 18 Hours and 32 Minutes

Upcoming moon phases

September 20, 2026
Lunar Day 8
First Quarter
Illumination: 62.97%
Rise
16:06
Set
00:20
September 21, 2026
Lunar Day 9
Waxing Gibbous
Illumination: 71.91%
Rise
16:40
Set
01:22
September 22, 2026
Lunar Day 10
Waxing Gibbous
Illumination: 80.16%
Rise
17:08
Set
02:26
September 23, 2026
Lunar Day 11
Waxing Gibbous
Illumination: 87.43%
Rise
17:34
Set
03:31
September 24, 2026
Lunar Day 12
Waxing Gibbous
Illumination: 93.35%
Rise
17:57
Set
04:36
September 25, 2026
Lunar Day 13
Full Moon
Illumination: 97.58%
Rise
18:19
Set
05:43
September 26, 2026
Lunar Day 14
Full Moon
Illumination: 99.76%
Rise
18:42
Set
06:50

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 MoonFriday, September 11, 202607:1319:260.02%0.12
🌓 First QuarterThursday, September 17, 202613:4422:3234.89%5.94
🌕 Full MoonFriday, September 25, 202618:1905:4397.58%13.3
🌗 Last QuarterFriday, October 2, 202622:5414:0064.99%20.72

Moon Phase Calendar for September, 2026

SundayMondayTuesdayWednesdayThursdayFridaySaturday
  
1Waning Gibbous🌖 82.04%Age 18.88
2Waning Gibbous🌖 72.76%Age 19.93
3Last Quarter🌗 62.23%Age 20.99
4Last Quarter🌗 50.98%Age 22.06
5Last Quarter🌗 39.58%Age 23.13
6Waning Crescent🌘 28.64%Age 24.22
7Waning Crescent🌘 18.78%Age 25.32
8Waning Crescent🌘 10.6%Age 26.41
9Waning Crescent🌘 4.56%Age 27.51
10New Moon🌑 1%Age 28.59
11New Moon🌑 0.02%Age 0.12
12New Moon🌑 1.52%Age 1.16
13Waxing Crescent🌒 5.24%Age 2.17
14Waxing Crescent🌒 10.82%Age 3.15
15Waxing Crescent🌒 17.88%Age 4.1
16Waxing Crescent🌒 26.02%Age 5.03
17First Quarter🌓 34.89%Age 5.94
18First Quarter🌓 44.2%Age 6.84
19First Quarter🌓 53.64%Age 7.73
20First Quarter🌓 62.97%Age 8.62
21Waxing Gibbous🌔 71.91%Age 9.51
22Waxing Gibbous🌔 80.16%Age 10.43
23Waxing Gibbous🌔 87.43%Age 11.36
24Waxing Gibbous🌔 93.35%Age 12.31
25Full Moon🌕 97.58%Age 13.3
26Full Moon🌕 99.76%Age 14.31
27Full Moon🌕 99.63%Age 15.34
28Full Moon🌕 97.02%Age 16.4
29Waning Gibbous🌖 91.96%Age 17.47
30Waning Gibbous🌖 84.66%Age 18.55