The week begins on Monday on French calendars

That's 2%

El Nino/La Nina episodes

Seasonality in births and sex ratios

C-sections by day of week, 2001

Sex ratio at birth by month, part 2

Sex ratio at birth by month

Births by month

The Surge and seasonality, August

The Surge and seasonality, July

The Surge and seasonality in coalition deaths

Decomposing seasonality in French deaths

Seasonality in French deaths

34 years worth of deaths