19 solar years correspond to almost exactly 235 synodic lunar months or full cycles of moon phases. This so-called Metonic cycle synchronizes the solar with the lunar year, and it can be turned into a virtual online and even a physical moon phase calculator.

New paper out: https://www.thomasweibel.ch/data/uploads/text/the_moon_machine.pdf

#astronomy #mathematics #mechanics #history #moon #moonphase #fullmoon #antiquity #archaeology #sciencehistory #digitalhumanities #astrophysics #physics #diy #3dprint

🌕 Full Moon: Maximum lunar brilliance achieved!

🌕 Current Phase: Full Moon (99% illuminated)
🌍 Distance: 356,400 km (221,456 miles)
🕐 Tonight: Moonrise 08:20 PM, Moonset 06:26 AM

🔄 Next Phase: Last Quarter on May 09, 2026
🌕 Next Full Moon: May 31, 2026
🌑 Next New Moon: May 16, 2026

📅 This Week's Moon Events:
• Full Moon: May 01, 2026

#MoonPhase #Astronomy #Automated #FullMoon

Full moon, says #Meton. And Meton should know.

Meet Meton: https://www.thomasweibel.ch/?post=rechner-aus-dem-drucker

#astronomy #mathematics #mechanics #history #moon #moonphase #fullmoon #antiquity #archaeology #sciencehistory #digitalhumanities #astrophysics #physics #diy #3dprint

🌔 Waxing Gibbous Moon: Almost full and growing brighter!

🌔 Current Phase: Waxing Gibbous (97% illuminated)
🌍 Distance: 357,190 km (221,947 miles)
🕐 Tonight: Moonrise 07:24 PM, Moonset 05:55 AM

🔄 Next Phase: Full Moon on May 01, 2026
🌕 Next Full Moon: May 01, 2026
🌑 Next New Moon: May 16, 2026

📅 This Week's Moon Events:
• Full Moon: May 01, 2026

#MoonPhase #Astronomy #Automated #WaxingGibbous

🌒 A slender crescent adorns the evening sky!

🌒 Current Phase: Waxing Crescent (38% illuminated)
🌍 Distance: 384,702 km (239,042 miles)
🕐 Tonight: Moonrise 12:33 PM, Moonset 01:59 AM

🔄 Next Phase: First Quarter on April 23, 2026
🌕 Next Full Moon: May 01, 2026
🌑 Next New Moon: May 16, 2026

📅 This Week's Moon Events:
• First Quarter: April 23, 2026

#MoonPhase #Astronomy #Automated #WaxingCrescent

🌒 Waxing Crescent: The first light after the new moon!

🌒 Current Phase: Waxing Crescent (27% illuminated)
🌍 Distance: 390,808 km (242,836 miles)
🕐 Tonight: Moonrise 11:25 AM, Moonset 01:05 AM

🔄 Next Phase: First Quarter on April 23, 2026
🌕 Next Full Moon: May 01, 2026
🌑 Next New Moon: May 16, 2026

📅 This Week's Moon Events:
• First Quarter: April 23, 2026

#MoonPhase #Astronomy #Automated #WaxingCrescent

🌑 New Moon: Set your intentions under the dark sky!

🌑 Current Phase: New Moon
🌍 Distance: 406,700 km (252,711 miles)
🕐 Tonight: Moonrise 06:51 AM, Moonset 08:28 PM

🔄 Next Phase: First Quarter on April 23, 2026
🌕 Next Full Moon: May 01, 2026
🌑 Next New Moon: May 16, 2026

📅 This Week's Moon Events:
• New Moon: April 17, 2026

#MoonPhase #Astronomy #Automated #NewMoon

🌘 Waning Crescent Moon: The final sliver before new moon!

🌘 Current Phase: Waning Crescent (3% illuminated)
🌍 Distance: 405,909 km (252,220 miles)
🕐 Tonight: Moonrise 06:15 AM, Moonset 07:20 PM

🔄 Next Phase: New Moon on April 17, 2026
🌕 Next Full Moon: May 01, 2026
🌑 Next New Moon: April 17, 2026

📅 This Week's Moon Events:
• New Moon: April 17, 2026

#MoonPhase #Astronomy #Automated #WaningCrescent