The Meyer-Palmen Solilunar Calendar is a proposal for calendar reform by Peter Meyer and Karl Palmen. It is a simple arithmetic lunisolar calendar. There are many leap month cycles like the 19 year cycle and the 353 year cycle. Peter Meyer discovered a cycle of years which nearly exactly fits a whole number of days, months and years and weeks. 6840 years and 84599 months and 2498258 days and 356894 weeks are all very equal to each other. This means that there should be 2519 leap years (with an extra month) and 1328 abundant years (with an extra day). To make it even simpler, the extra day added to form an abundant year is always in a leap month. This also reduces the possible lengths of a year making it only have 354 days, 384 days, or 385 days.