National Astronomical Observatory of Japan

January, 2015


The sky of Tokyo

The sky of Tokyo (8:00 p.m. Mid-January)
Click to enlarge

Calendar (January)

1New Year’s Day [Shogatsu] (National holiday)
4Earth passes perihelion / the Quadrantids Meteor Shower is peak around 11 a.m. (the outburst would not be expected because the peak is in day time and there is effect of moonlight during whole night.)
5Full Moon
12Coming-of-Age Day [Seijin no hi] (National holiday)
13Last Quarter
15Greatest Eastern Elongation of Mercury
20New Moon
21Mercury at stationary point
27First Quarter
30Mercury at inferior conjunction

The posted peak day and time of meteor showers is based on the prediction of IMO(International Meteor Organization).