<1 دقیقه.
1 ***
How Persian calendar Perfectly matches with Events in Solar system
- Spring Equinox =
equal day and night=
Start of spring=
Nowrooz (New day)=
1st of Farvardin =
Frist day of the Persian calendar year=
~21 March
- Summer Solstice=
Longest day=
Start of summer=
1st of Tir =
Start of the 4th month of the year=
end of 3 months of spring=
~21 June
- Autumn Equinox=
equal day and night=
Start of fall=
1st of Mehr=
schools opening=
~23 September
- Winter Solstice =
Shortest day=
longest night=
Start of the last 3 months of the year=
Start of winter=
Yalda night=
1st of Dey=
~21 December
