Lunar Phase Calendar

Monthly moon phases, illumination percentages, and rise/set times — powered by Skyfield.

Optional: Enter your 5-digit US ZIP code to add moon rise and set times.
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February 2026

Sun Mon Tue Wed Thu Fri Sat
1
🌕
Full Moon
99.7%
🌕 Full Moon
2
🌕
Full Moon
99.5%
3
🌕
Full Moon
96.9%
4
🌖
Waning Gibbous
92.1%
5
🌖
Waning Gibbous
85.6%
6
🌖
Waning Gibbous
77.8%
7
🌖
Waning Gibbous
69.1%
8
🌗
Last Quarter
59.9%
9
🌗
Last Quarter
50.4%
🌗 Last Quarter
10
🌗
Last Quarter
41.0%
11
🌗
Last Quarter
32.0%
12
🌘
Waning Crescent
23.5%
13
🌘
Waning Crescent
15.8%
14
🌘
Waning Crescent
9.3%
15
🌘
Waning Crescent
4.3%
16
🌑
New Moon
1.1%
17
🌑
New Moon
0.0%
🌑 New Moon
18
🌑
New Moon
1.2%
19
🌒
Waxing Crescent
4.7%
20
🌒
Waxing Crescent
10.5%
21
🌒
Waxing Crescent
18.3%
22
🌒
Waxing Crescent
27.9%
23
🌓
First Quarter
38.6%
24
🌓
First Quarter
50.0%
🌓 First Quarter
25
🌓
First Quarter
61.4%
26
🌔
Waxing Gibbous
72.1%
27
🌔
Waxing Gibbous
81.7%
28
🌔
Waxing Gibbous
89.6%

Next Major Phases

🌕
Full Moon
March 03, 2026
11:37 UTC
In 3 days
🌗
Last Quarter
March 11, 2026
09:38 UTC
In 11 days
🌑
New Moon
March 19, 2026
01:23 UTC
In 19 days
🌓
First Quarter
March 25, 2026
19:17 UTC
In 25 days

Phase Reference

Phase Name Illumination Best for Observing
🌑New Moon ~0% Deep sky objects (darkest skies)
🌒Waxing Crescent1–49% Evening crescent, earthshine visible
🌓First Quarter ~50% Lunar terminator & crater detail
🌔Waxing Gibbous 51–99% Mare & highland contrast
🌕Full Moon ~100% Naked-eye features; bright
🌖Waning Gibbous 99–51% Late-night & pre-dawn viewing
🌗Last Quarter ~50% Pre-dawn terminator detail
🌘Waning Crescent49–1% Pre-dawn crescent; near-dark skies

Understanding Lunar Phases

The lunar cycle: The Moon completes one full cycle of phases — from New Moon back to New Moon — every 29.53 days (the synodic period). This calendar uses the Skyfield astronomy library to compute precise illumination and phase angles directly from JPL ephemeris data, so percentages and phase labels are accurate to the minute.

Rise and set times: When a ZIP code is provided, the calendar adds local moonrise and moonset times for each day. These times vary significantly with latitude and can shift by more than an hour across the continental US. On some days the Moon may not rise or set at all — this is normal near the poles or when the Moon's orbital geometry keeps it above (or below) the horizon for a full day.

Related space tools: Find out if tonight is good for stargazing — including twilight windows, satellite passes, and a quality rating — with the Night Sky Planner. Track the ISS in real time with the ISS Tracker, or predict visible passes for dozens of other satellites with the Satellite Pass Predictor.

This tool was created by Ben Crittenden, an IT professional with experience in web development, systems administration, and project management.