Lunar Cycle Analysis
Duration in days of each lunation for the period 1974 - 1985.
| Lunation | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L1 | 30 | 29 | 29 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 30 | 29 | 352 |
| L2 | 29 | 30 | 30 | 30 | 29 | 30 | 30 | 29 | 30 | 30 | 30 | 30 | 357 |
| L3 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 30 | 29 | 29 | 30 | 30 | 356 |
| L4 | 29 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 30 | 30 | 29 | 29 | 352 |
| L5 | 30 | 30 | 29 | 30 | 30 | 29 | 30 | 29 | 29 | 29 | 30 | 30 | 355 |
| L6 | 29 | 29 | 30 | 29 | 30 | 30 | 29 | 30 | 29 | 29 | 29 | 29 | 352 |
| L7 | 29 | 29 | 29 | 30 | 29 | 29 | 30 | 29 | 30 | 30 | 29 | 30 | 353 |
| L8 | 30 | 30 | 29 | 29 | 30 | 30 | 30 | 30 | 29 | 29 | 30 | 29 | 355 |
| L9 | 29 | 29 | 30 | 30 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 30 | 353 |
| L10 | 30 | 30 | 29 | 29 | 30 | 29 | 30 | 30 | 29 | 30 | 29 | 29 | 354 |
| L11 | 29 | 29 | 30 | 30 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 357 |
| L12 | 30 | 30 | 29 | 29 | 30 | 29 | 29 | 30 | 30 | 29 | 30 | 29 | 354 |
| L13 | 30 | - | 30 | - | - | 30 | - | - | 30 | - | - | 30 | 150 |
| Yearly Total | 384 | 354 | 384 | 354 | 355 | 384 | 354 | 355 | 384 | 353 | 355 | 384 |
Period Summary
Number of years with 12 lunations: 7
Number of years with 13 lunations: 5
Total number of days over the period: 4400