Moon Phase Calendar
Track moon phases throughout the month for astronomy and planning
Planning outdoor nighttime activities? TimezoneToolbox offers Time & Timezone Utilities Platform to help coordinate your adventures.
Select Month
Current Moon Phase
🌒
Waxing Crescent
28% Illuminated
Thursday, May 21, 2026
Major Moon Phases in May 2026
🌕
Full Moon
May 1, 2026
100% illuminated
🌗
Last Quarter
May 9, 2026
59% illuminated
🌑
New Moon
May 17, 2026
0% illuminated
🌓
First Quarter
May 23, 2026
45% illuminated
🌕
Full Moon
May 31, 2026
100% illuminated
Daily Moon Phases
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
🌕
100%
2
🌕
100%
3
🌖
98%
4
🌖
95%
5
🌖
90%
6
🌖
84%
7
🌖
77%
8
🌖
68%
9
🌗
59%
10
🌗
49%
11
🌘
39%
12
🌘
29%
13
🌘
19%
14
🌘
11%
15
🌘
5%
16
🌘
1%
17
🌑
0%
18
🌒
2%
19
🌒
7%
20
🌒
14%
21
🌒
24%
22
🌒
34%
23
🌓
45%
24
🌓
56%
25
🌔
66%
26
🌔
75%
27
🌔
83%
28
🌔
90%
29
🌔
95%
30
🌔
98%
31
🌕
100%
🌙 About Moon Phases
The Moon goes through eight distinct phases as it orbits Earth every ~29.5 days. These phases are determined by the Moon's position relative to the Sun and Earth.
Major Phases:
- 🌑 New Moon: Moon is between Earth and Sun (0% illuminated)
- 🌓 First Quarter: Right half is illuminated (50%)
- 🌕 Full Moon: Earth is between Moon and Sun (100%)
- 🌗 Last Quarter: Left half is illuminated (50%)
Intermediate Phases:
- 🌒 Waxing Crescent: Thin crescent growing larger
- 🌔 Waxing Gibbous: More than half, approaching full
- 🌖 Waning Gibbous: Just past full, decreasing
- 🌘 Waning Crescent: Thin crescent getting smaller
Powerful Date Calculations
DateMath Pro — Professional Date Calculation Suite
Add or subtract business days, compute lead times, and export precise schedules without leaving your browser.
Explore DateMath Pro