bom.gov.au

x6l9o TIL Australia doesn't use the solstices and equinoxes to define the seasons, instead it's weather based and each season is 3 full months. Summer is Dec 1 to Feb 28.
gM1Gb TIL the Japanese squadron that bombed Pearl harbour was detected by a prototype Hawaiian Radar before the air raid but no alert was sent out, as nobody believed the inexperienced radar operators.