The ‘Wolf Moon’ Brings in the New Year on 1-2 January

The ‘Wolf Moon’ Brings in the New Year on 1-2 January

The ‘Wolf Moon’ Brings in the New Year on 1-2 January

The 1st of 2 January 2018 full moons falls on the evening of 1 January 2018, for most of the Western Hemisphere and on 2 January for the Eastern Hemisphere.

This supermoon, know as the Wolf Moon comes only 4.5 hours after the moon reaches lunar perigee the moon’s closest point to Earth in its monthly orbit. Thus this full moon presents the closest, and thereby the largest and brightest supermoon of Y 2018.

Of the 13 full moons and 14 lunar perigees occurring in Y 2018, this is the closest alignment of full moon and lunar perigee for the year.

This close coincidence of full moon and perigee in early January 2018 not only gives us the closest full moon of Y 2018 but also the closest lunar perigee of 2018. See below to note the nearness in time of this perigee and full moon.

Lunar perigee distance (2018 Jan 1 at 21:54 UTC): 356,565 km
Full moon distance (2018 Jan 2 at 2:24 UTC): 356,846 km

Join the Virtual Telescope Project in Rome for an online viewing of the 1 January 2018 supermoon.

Here’s a comparison between the 3 December full moon at perigree (closest to Earth for the month) and the year’s farthest full moon in June at apogee (farthest from Earth for the month) by Muzamir Mazlan at Telok Kemang Observatory, Port Dickson, Malaysia.

See more photos of December’s supermoon.

To the eye alone, a supermoon probably does not look any larger than an ordinary full moon (although it might look brighter).

But Earth’s oceans feel the gravity of the extra-close supermoon, which causes particularly high and low tides.

James Younger wrote on December 3, 2017: “I held a low-tide supermoon photography event at Island View Beach, Vancouver Island, BC.”

 See more photos of December’s supermoon.

Although the moon turns precisely full at the same instant worldwide ( 2 January at 2:24 Universal Time), the time and possibly the date of the full moon varies according to one’s time zone.

At North American and US time zones, the full moon actually comes to pass on the evening of 1 January at these times:

22:24 (10:24 p.m.) Atlantic Standard Time (AST)
21:24 (9:24 p.m.) Eastern Standard Time (EST)
20:24 (8:24 p.m.) Central Standard Time (CST)
19:24 (7:24 p.m.) Mountain Standard Time (MST)
18:24 (6:24 p.m.) Pacific Standard Time (PST)
17:24 (5:24 p.m.) Alaska Standard Time (AKST)
16:24 (4:24 p.m.) Hawaiian Standard Time (HST)

Astronomers say the moon is full at the instant that the moon is directly opposite the sun in ecliptic or celestial longitude. Another way of looking at it, the moon-sun elongation at full moon equals 180o.

Click here to find out the present Moon-Sun elongation, remembering that a positive number means a waxing moon and a negative number a waning moon.

However, since the moon stays more or less opposite the Sun throughout the night tonight, we can say the moon is full all night long. Around the world tonight, we can expect the moon to rise around sunset, climb highest up for the night around Midnight and to set around sunrise.

On the night of the full moon, the moon typically shines from dusk until dawn.

Image via US Naval Observatory.

The day and night sides of Earth at the instant of full moon (2 January at 2:24 Universal Time). The shadow line at left depicts sunset 1 January, and the shadow line at right represents sunrise on 2 January.

Tuesday night’s full moon is the 2nd in a series of three successive full moon supermoons occurring on 3 December 2017, plus 2 and 31 January 2018.

As is typically the case, the 2nd of these three full moon supermoons most closely coincides with lunar perigee, showcasing the closest and largest supermoon in this grand procession of supermoons.

Full moon distance (2017 Dec 3 at 15:47 UTC): 357,987 km
Lunar apogee distance (2017 Dec 4 at 8:42 UTC): 357,492 km

Full moon distance (2018 Jan 2 at 2:24 UTC): 356,846 km
Lunar perigee distance (2018 Jan 1 at 21:54 UTC): 356,565 km

Full moon distance (2018 Jan 31 at 13:27 UTC): 360,199 km
Lunar perigee distance (2018 Jan 30 at 9:54 UTC): 358,995 km


Some people will call the next full moon on 31 January a Blue Moon because it’s the 2nd of 2 full moons to occur in 1 calendar month.

Moreover, this 2nd supermoon of January 2018 will stage a total eclipse of the moon.

Have a Happy New Year!

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