Today is the #December #Solstice, marking the start of #Winter in the #NorthernHemisphere and #Summer in the #SouthernHemisphere. It occurs when the #Sun is at its most southerly #zenith at midday. This year it is at about 21:48Z meaning that it will be somewhere precisely overhead in the southern #PacificOcean, but well to the east of the #InternationalDateLine. It also means that the Sun will set at its most southerly bearing of the year tonight giving you either the longest night (NH) or longest day (SH).