Opaque Hourglass
Substacknewsletter · by Mark Leidner
- Audience
- Not shown publicly
- We show a dash rather than guess
- Observed frequency
- Monthly or less
- From 3 posts indexed in the last 90 days
- Last post
- Nov 5, 2026
- 10 days ago
- Likely audience
- poetry readers
- Inferred from post content
Opaque Hourglass is a Substack newsletter by Mark Leidner covering poetry book promotion, author reading tour and modern translation of classical epic. NewsletterFIT indexed 3 posts from it in the last 90 days, most recently on Nov 5, 2026.
Topics
- poetry book promotion
- author reading tour
- modern translation of classical epic
- literary criticism and reinterpretation
- book release and tour
Recent posts
- Doors
- Book Release…
- Poem for…
- Checking In…
- New Book:…
- Skyberpunk Manifesto…
Sponsors detected
No sponsored posts detected in the last 180 days of indexed posts.
Detected automatically from posts marked as sponsored. Detection can miss or misread placements.
See the full picture on Opaque Hourglass
Subscriber momentum over time, every detected sponsor with the source post, companies and people it mentions, guests, and an alert when any of it changes.
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Compiled from public pages · refreshed Nov 8, 2026 · How NewsletterFIT collects and labels data