SkyAlmanac

Moon · December 2025

Moon calendar for Ottawa, Ontario, Canada: December 2025

Daily moon phases, illumination, moonrise and moonset in Ottawa, Ontario, Canada for December 2025. Full moon: December 4, 2025. All times are shown in the local time of Ottawa, Ontario, Canada.

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Full moonThursday, December 4, 2025, 6:18 PM
New moonFriday, December 19, 2025, 9:59 PM
Day Phase Illumination Moonrise Moonset
1 Waxing Gibbous 86% 1:37 PM 3:40 AM
2 Waxing Gibbous 93% 2:00 PM 5:12 AM
3 Waxing Gibbous 98% 2:24 PM 6:26 AM
4 Full Moon 100% 2:32 PM 7:53 AM
5 Full Moon 99% 4:09 PM 9:22 AM
6 Waning Gibbous 96% 5:23 PM 10:16 AM
7 Waning Gibbous 90% 6:26 PM 11:02 AM
8 Waning Gibbous 82% 7:57 PM 11:37 AM
9 Waning Gibbous 73% 9:28 PM 11:59 AM
10 Waning Gibbous 63% 10:26 PM 12:20 PM
11 Last Quarter 52% 11:41 PM 12:27 PM
12 Last Quarter 42% — 12:42 PM
13 Waning Crescent 33% 12:41 AM 1:19 PM
14 Waning Crescent 24% 1:57 AM 1:33 PM
15 Waning Crescent 16% 3:10 AM 1:42 PM
16 Waning Crescent 10% 4:14 AM 2:12 PM
17 Waning Crescent 5% 5:24 AM 2:29 PM
18 Waning Crescent 2% 6:18 AM 3:27 PM
19 New Moon 0% 7:24 AM 4:03 PM
20 New Moon 0% 8:10 AM 4:55 PM
21 Waxing Crescent 3% 8:40 AM 6:02 PM
22 Waxing Crescent 6% 9:33 AM 7:20 PM
23 Waxing Crescent 12% 9:52 AM 8:21 PM
24 Waxing Crescent 20% 10:21 AM 9:36 PM
25 Waxing Crescent 29% 10:29 AM 10:38 PM
26 First Quarter 40% 10:58 AM —
27 First Quarter 51% 11:29 AM 12:06 AM
28 Waxing Gibbous 62% 11:38 AM 1:31 AM
29 Waxing Gibbous 73% 12:02 PM 2:32 AM
30 Waxing Gibbous 83% 12:23 PM 4:10 AM
31 Waxing Gibbous 91% 1:11 PM 5:38 AM

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Frequently asked questions

When is the full moon in December 2025 in Ottawa, Ontario, Canada?

The full moon peaks on Thursday, December 4, 2025, 6:18 PM (local time).

When is the new moon in December 2025?

The new moon falls on Friday, December 19, 2025, 9:59 PM (local time) — the darkest nights of the month, best for stargazing.

Data: Meeus astronomical algorithms. How we calculate this

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