Solar-calendar period
Else clues• Astronomical difference
• Calendar adjustment
• Difference in days between the lunar and solar year
• Lunar-solar time gap
• Lunar/solar calendar harmonizer
• Moon variation
• Moon's age at the new year
• Solar lunar equalizer
• Solar year-lunar year differential
• Solar-lunar calendar discrepancy
• Solar-lunar calendars differential
• Solar-lunar difference
• Solar-lunar year difference
• Solar-vs.-lunar year period
• Solar-year excess
• Time excess of a sort