SWISS BOOK DATA
Browse bestseller lists by day
Choose a bookstore list, set a snapshot day, and follow how each ranked title moves through the history.
ReadyAmazon · General · Top 20 selectedUpdated 2026-09-22 10:30 UTCDay 2026-09-22
What this page does
This dashboard reads the nested `bestsellers` folders in the `aghasemi/data` repository and presents each list as a stable, day-by-day view.
Snapshot behavior
A selected calendar day uses its exact JSON snapshot when available. If a file is missing, the latest earlier snapshot is shown and the fallback is called out above the ranked titles.
Rank history
Every title has a permanent query-parameter link. Its expandable card includes first appearance, best rank, streak length, and a quiet analytical chart.
The source index is held in memory for the running server. Use Refresh source index after the upstream repository changes.