diff --git a/src/render/Custom.zig b/src/render/Custom.zig
index 04e246f..0f9a57b 100644
--- a/src/render/Custom.zig
+++ b/src/render/Custom.zig
@@ -100,7 +100,10 @@ pub fn render(writer: *std.Io.Writer, weather: types.WeatherData, format: []cons
 }
 
 fn nowAt(coords: Coordinates) !i64 {
-    const now = try zeit.instant(.{});
+    const now = if (@import("builtin").is_test)
+        (try zeit.Time.fromISO8601("2026-01-09")).instant()
+    else
+        try zeit.instant(.{});
     const offset = TimeZoneOffsets.getTimezoneOffset(coords);
     const new = if (offset >= 0)
         try now.add(.{ .minutes = @abs(offset) })