Comment by deafpolygon

    #!/bin/bash

    year=2025
    start="2025-01-01"
    end="2025-12-31"
    
    start_epoch=$(gdate -d "$start" +%s)
    end_epoch=$(gdate -d "$end" +%s)
    
    day_seconds=86400
    
    for ((t = $start_epoch; t <= $end_epoch; t += $day_seconds)); do
        gdate -d "@$t" "+%F w%V %a - " | tr '[:upper:]' '[:lower:]'
    done