The following tables list the first day and the
length of the angular months, depending on the year length, with
vernal equinox fixed to be March 21st, as defined in
Joussaume, S. and P. Braconnot, 1997: Sensitivity of paleoclimate
simulation results to season definitions. Journal of Geophysical
Research (Atmosphere), 102, 1943-1956. The dates are relative to
the present calendar months.
126 ka has been included to help see the difference between two
climatic periods.
[ Text version ]
| 365-day year | ||||
|---|---|---|---|---|
| Month | 126 kyr BP | 6 kyr BP | ||
| Month / Day | Length | Month / Day | Length | |
| January | 12 / 25 | 34 | 12 / 28 | 32 |
| February | 01 / 28 | 31 | 01 / 29 | 30 |
| March | 02 / 28 | 32 | 02 / 28 | 32 |
| April | 04 / 01 | 30 | 04 / 01 | 31 |
| May | 05 / 01 | 29 | 05 / 02 | 31 |
| June | 05 / 30 | 27 | 06 / 02 | 29 |
| July | 06 / 26 | 28 | 07 / 01 | 30 |
| August | 07 / 24 | 28 | 07 / 31 | 29 |
| September | 08 / 21 | 28 | 08 / 29 | 29 |
| October | 09 / 18 | 32 | 09 / 27 | 30 |
| November | 10 / 20 | 32 | 10 / 27 | 30 |
| December | 11 / 21 | 34 | 11 / 26 | 32 |
[ Text version ]
| 360-day year | ||||
|---|---|---|---|---|
| Month | 126 kyr BP | 6 kyr BP | ||
| Month / Day | Length | Month / Day | Length | |
| January | 12 / 24 | 33 | 12 / 27 | 31 |
| February | 01 / 27 | 33 | 01 / 28 | 32 |
| March | 02 / 30 | 31 | 02 / 30 | 31 |
| April | 04 / 01 | 30 | 04 / 01 | 31 |
| May | 05 / 01 | 28 | 05 / 02 | 30 |
| June | 05 / 29 | 27 | 06 / 02 | 29 |
| July | 06 / 26 | 27 | 07 / 01 | 29 |
| August | 07 / 23 | 27 | 07 / 30 | 28 |
| September | 08 / 20 | 29 | 08 / 28 | 29 |
| October | 09 / 19 | 30 | 09 / 27 | 29 |
| November | 10 / 19 | 32 | 10 / 26 | 30 |
| December | 11 / 21 | 33 | 11 / 26 | 31 |