▁in ▁the ▁previous ▁ 1 5 ▁years . ▁This ▁was ▁referred ▁to ▁in ▁popular ▁media ▁as ▁a ▁super mo on . ▁ ▁On ▁ 1 9 ▁March ▁ 2 0 1 1 , ▁there ▁was ▁another ▁full ▁" super mo on ", ▁closer ▁to ▁the ▁Earth ▁than ▁at ▁any ▁time ▁in ▁the ▁previous ▁ 1 8 ▁years . ▁ ▁On ▁ 1 4 ▁November ▁ 2 0 1 6 , ▁there ▁was ▁another ▁full ▁" super mo on "; ▁this ▁time ▁it ▁was ▁closer ▁to ▁the ▁Earth ▁than ▁at ▁any ▁time ▁in ▁the ▁previous ▁ 6 8 ▁years . ▁ ▁Formula ▁ ▁The ▁date ▁and ▁approximate ▁time ▁of ▁a ▁specific ▁full ▁moon ▁( ass uming ▁a ▁circular ▁orbit ) ▁can ▁be ▁calculated ▁from ▁the ▁following ▁equation : ▁ ▁where ▁d ▁is ▁the ▁number ▁of ▁days ▁since ▁ 1 ▁January ▁ 2 0 0 0 ▁ 0 0 : 0 0 : 0 0 ▁in ▁the ▁Terr est rial ▁Time ▁scale ▁used ▁in ▁astronom ical ▁e ph emer ides ; ▁for ▁Universal ▁Time ▁( UT ) ▁add ▁the ▁following ▁approximate ▁correction ▁to ▁d : ▁▁ ▁days ▁where ▁N ▁is ▁the ▁number ▁of ▁full ▁mo ons ▁since ▁the ▁first ▁full ▁moon ▁of ▁ 2 0 0 0 . ▁The ▁true ▁time ▁of ▁a ▁full ▁moon ▁may ▁differ ▁from ▁this ▁approximation ▁by ▁up ▁to ▁about ▁ 1 4 . 5 ▁hours ▁as ▁a ▁result ▁of ▁the ▁non - circ ular ity ▁of ▁the ▁Moon ' s ▁orbit . ▁See ▁New ▁moon ▁for ▁an ▁explanation ▁of ▁the