Allows showing what the current time would be if we used different conversion from seconds to minutes to hours.

anyclock.py

from __future__ import annotations
import pygame
import math
from datetime import datetime

HOURS_PER_DAY = 10
MINUTES_PER_HOUR = 100
SECONDS_PER_MINUTE = 100


def main():
    pygame.init()

    screen = pygame.display.set_mode((1024, 400))
    clock = pygame.time.Clock()

    seconds_per_hour = SECONDS_PER_MINUTE * MINUTES_PER_HOUR
    seconds_per_day = HOURS_PER_DAY * MINUTES_PER_HOUR * SECONDS_PER_MINUTE
    font_clock = pygame.font.SysFont('Monospace', size=100)
    font_s = pygame.font.SysFont('Monospace', size=18)

    hour_digits = math.ceil(math.log10(HOURS_PER_DAY))
    minute_digits = math.ceil(math.log10(MINUTES_PER_HOUR))
    second_digits = math.ceil(math.log10(SECONDS_PER_MINUTE))

    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                return
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_ESCAPE:
                    return

        now = datetime.now()
        today = datetime(now.year, now.month, now.day, 0, 0, 0, 0)
        old_seconds = (now - today).total_seconds()
        new_seconds = int(seconds_per_day / 86400 * old_seconds)

        s_surf1 = font_s.render(f'{new_seconds:_d}/{seconds_per_day:_d}', True, 'white')
        s_surf2 = font_s.render(f'{int(old_seconds):_d}/{86400:_d}', True, 'white')

        hours, seconds = divmod(new_seconds, seconds_per_hour)
        minutes, seconds = divmod(seconds, SECONDS_PER_MINUTE)
        text = f'{hours:0{hour_digits}d}:{minutes:0{minute_digits}d}:{seconds:0{second_digits}d}'

        clock_surf = font_clock.render(text, True, 'white')
        top = (screen.get_height() - clock_surf.get_height()) // 2
        left = (screen.get_width() - clock_surf.get_width()) // 2

        old_seconds = int(old_seconds)
        old_hours, old_seconds = divmod(old_seconds, 3600)
        old_minutes, old_seconds = divmod(old_seconds, 60)
        clock_orig_surf = font_s.render(f'{old_hours:02d}:{old_minutes:02d}:{old_seconds:02d}', True, 'white')

        orig_left = (screen.get_width() - clock_orig_surf.get_width()) // 2
        orig_top = top + clock_surf.get_height()

        screen.fill('black')
        screen.blit(clock_surf, (left, top))
        screen.blit(clock_orig_surf, (orig_left, orig_top))
        screen.blit(s_surf1, (10, 10))
        screen.blit(s_surf2, (10, 35))
        clock.tick(30)
        pygame.display.flip()


if __name__ == '__main__':
    main()