Marked Days is a series of three screen-printed feminist data visualisation calendar posters mapping femicides, the gender pay gap, and endometriosis across 2017, 2027, and 2037. Placed side by side, the three posters reveal how the data shifts or fails to shift across two ten-year gaps. Each poster translates a year of invisible systemic violence into 365 cells, inviting the viewer to read time, accumulation, and the slow pace of change at a glance.
FULL ABSTRACT
Marked Days is a series of three screen-printed feminist data visualisation posters produced as part of a Master of Design in Graphic Design at HGK Basel / FHNW. Each poster maps a calendar year — 2017, 2027, and 2037 — onto a grid of 365 cells, using three visual symbols to represent three feminist datasets: femicides, the gender pay gap, and endometriosis. Designed to be read as a triptych, the three posters are intended to be compared directly: placed side by side, they make visible how these three forms of gendered inequality have evolved or persisted across two ten-year gaps. The project sits at the intersection of critical graphic design, feminist theory, and data visualisation, and draws on a lineage of activist design practice that uses visual form to make structural inequality legible.
The theoretical foundation of the project builds on Laura Mulvey's concept of the male gaze and John Berger's analysis of how women are seen versus how men act
1. These frameworks are extended through the lens of feminist data practice, drawing particularly on Catherine D'Ignazio and Lauren Klein's Data Feminism, which argues that data is never neutral: what gets counted, how it is visualised, and who produces the visualisation are all political acts
2. In this context, Marked Days is not merely a design project but a form of feminist counter-cartography: mapping the lived experience of women onto a structure, the calendar, that appears universal but is experienced very differently depending on one's gender.
The project is grounded in the work of feminist graphic designers who came before. Sheila Levrant de Bretteville's practice of designing with and for women, rather than about them, informs the project's approach to data selection and visual language. The Guerrilla Girls' use of statistics as political provocation, their famous deployment of numbers to expose institutional sexism, is a direct precedent for the way Marked Days weaponises data through form. Each of the three datasets was chosen because it represents a form of gendered violence or inequality that remains largely invisible in mainstream visual culture: femicides are underreported; the pay gap is disputed; endometriosis is under-researched and under-funded.
The visual system is deliberately consistent across all three posters. Each year is represented by the same 16-column by 23-row grid and the same three graphic symbols: a filled square for endometriosis appointments, a circle for unpaid days, and a cross for femicides. What changes across the triptych is the spatial organisation of these symbols, reflecting a different internal logic for each year, and the quantity of each symbol, which shifts in direct proportion to the data. This means that a viewer standing in front of all three posters can immediately perceive the difference: more crosses in 2037 than in 2017, fewer circles as the pay gap slowly narrows, a smaller cluster of squares as endometriosis diagnosis improves. The comparison is the message. The year is printed as a final glossy layer over the data, using a pixel art typeface built from the grid cells themselves, anchoring each poster in its moment in time.
The data for each year was carefully sourced and, for 2027 and 2037, projected from established trends. Femicide figures draw on the French collective Féminicides par compagnons ou ex and NousToutes; pay gap data from INSEE Focus; endometriosis data from EndoFrance and Inserm. The endometriosis data represents the number of medical appointments a woman with the condition attends per year, including unanswered consultations, repeated referrals, post-diagnosis care, and chronic pain management, rather than the diagnostic delay alone. This grounds the data in a concrete, recurring presence in a woman's calendar rather than an abstract statistic.
The posters are produced by screen printing, with each data layer as a separate PDF for individual ink passes. This cumulative, physical process mirrors the project's central argument: inequality accumulates. Each layer must register precisely onto the one before, just as each dataset sits in relation to the others across time. Viewed together, the three posters form a timeline, not of progress, but of the rate of change, and of what remains stubbornly unchanged.
Marked Days argues that the calendar is a political form. A year looks different depending on who you are. Placing 2017, 2027, and 2037 side by side makes that difference and that persistence impossible to ignore.
B i o g r a p h y
Claire Roberts is a French-British graphic designer born in Geneva and based between Strasbourg and Basel. She studied graphic design in Strasbourg before pursuing a Master of Design at HGK Basel / FHNW. Her practice has been shaped by studio experiences in London and a sustained interest in screen printing, brand design, and editorial design. She will join Caserne, an award-winning design studio in Montreal, in October 2026.
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