init python:
    class Calendar():
        periods = ("Janemar", "Aprimju", "Juliasep", "Octobrinde")
        weekdays = ("Monday", "Tuesday", "Wednsday", "Thursday", "Friday", "Saturday", "Sunday")
        _day = 0

        @staticmethod
        def get_schedule(span=35):
            contents = {i: "" for i in range(span)}

            # Add moon cycles
            for i in range(span):
                if (i % 7 == 0):
                    contents[i] += "🌕"
                elif (i % 7 == 3):
                    contents[i] += "🌓"
                # elif (game.day % 60 == 30) # Blood moon

            forecast = Weather.forecast(span)
            for i, v in forecast.items():
                if v == "clear":
                    contents[i] += "☀️"
                elif v == "cloudy":
                    contents[i] += "⛅"
                elif v == "overcast":
                    contents[i] += "☁️"
                elif v in ("blizzard", "snow"):
                    contents[i] += "🌨️"
                elif v == "rain":
                    contents[i] += "🌧️"
                elif v == "storm":
                    contents[i] += "🌩️"

            # Add letters
            letters = mailbox.get_letters(True)
            for i in letters:
                if (day := game.day+i.wait) < span+1:
                    contents[day] += "✉️"

            # Add parcels
            parcels = mailbox.get_parcels(True)
            for i in parcels:
                if (day := game.day+i.wait) < span+1:
                    contents[day] += "📦"

            return contents

        @staticmethod
        def get_weekday(n=None):
            if n is None:
                n = game.day

            return Calendar.weekdays[n % 7]

        @staticmethod
        def get_period(n=None):

            if n is None:
                n = game.day

            return Calendar.periods[(n // 30) % 4]

label calendar:
    call screen calendar
    jump main_room_menu

screen calendar:
    default contents = Calendar.get_schedule().items()
    default period = Calendar.get_period()

    text "[period]" align (0.5, 0.1) color "#fff" size 24
    grid 7 6:
        style "empty"
        align (0.5, 0.5)

        for i in ("MON", "TUE", "WED", "THU", "FRI", "SAT", "SUN"):
            fixed:
                xysize (64, 64)
                add "#fff"
                text "[i]"


        for i, ev in contents:
            fixed:
                xysize (64, 64)
                if i > 29:
                    add "#888888"
                elif i == (game.day % 30):
                    add "#ff0000ff"
                else:
                    add "#fff"

                vbox:
                    text "[(i % 30) + 1]" size 10 color "#000"
                    text "[ev]" size 12


    textbutton "Close" action Return() align (0.5, 0.9)