diff --git a/Sources/Publish/API/DeploymentMethod.swift b/Sources/Publish/API/DeploymentMethod.swift
index 0f0e43c0..1c1c13b7 100644
--- a/Sources/Publish/API/DeploymentMethod.swift
+++ b/Sources/Publish/API/DeploymentMethod.swift
@@ -64,6 +64,7 @@ public extension DeploymentMethod {
 
             let dateFormatter = DateFormatter()
             dateFormatter.dateFormat = "yyyy-MM-dd HH:mm"
+            dateFormatter.locale = Locale(identifier: "en_us_POSIX")
             let dateString = dateFormatter.string(from: Date())
 
             do {
diff --git a/Sources/Publish/API/PublishingContext.swift b/Sources/Publish/API/PublishingContext.swift
index 4dd14caa..aaba5267 100644
--- a/Sources/Publish/API/PublishingContext.swift
+++ b/Sources/Publish/API/PublishingContext.swift
@@ -48,6 +48,7 @@ public struct PublishingContext<Site: Website> {
         let dateFormatter = DateFormatter()
         dateFormatter.dateFormat = "yyyy-MM-dd HH:mm"
         dateFormatter.timeZone = .current
+        dateFormatter.locale = Locale(identifier: "en_us_POSIX")
         self.dateFormatter = dateFormatter
     }
 }
diff --git a/Sources/PublishCLICore/ProjectGenerator.swift b/Sources/PublishCLICore/ProjectGenerator.swift
index 4d12f957..160d7ba9 100644
--- a/Sources/PublishCLICore/ProjectGenerator.swift
+++ b/Sources/PublishCLICore/ProjectGenerator.swift
@@ -75,6 +75,7 @@ private extension ProjectGenerator {
         let dateFormatter = DateFormatter()
         dateFormatter.dateFormat = "yyyy-MM-dd HH:mm"
         dateFormatter.timeZone = .current
+        dateFormatter.locale = Locale(identifier: "en_us_POSIX")
 
         try postsFolder.createFile(named: "first-post.md").write("""
         ---