To get the current season, do %time.season%.
The seasons are:
winter (month 0-3), spring (month 4-7), summer (month 8-12) and autumn (month 13-16).
Note that the total amount of months is 17, and that summer has 5 months.
All other seasons have 4 months.
To get the current moon phase, do %time.moon%.
The moon phases are:
"full", "waning gibbous", "last quarter", "waning crescent", "new", "waxing crescent", "first quarter" and "waxing gibbous".
For example, if something in a script should only happen if the moon is waning gibbous, do
if %time.moon% == waning gibbous
%echo% leprechauns take over the world
end
Keep in mind that %time.moon% will return the current moon phase even if it's daytime.