From 8689baf21150f64156ccfd3a53657a3e8cfebdd6 Mon Sep 17 00:00:00 2001
From: Adrian D'Alessandro <a.dalessandro@imperial.ac.uk>
Date: Tue, 3 Oct 2023 17:39:30 +0100
Subject: [PATCH] Explicitly use nanosecond units when creating opal dataframe

There is a bug in pandas https://github.com/pandas-dev/pandas/issues/55374
---
 datahub/opal.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/datahub/opal.py b/datahub/opal.py
index c02cd96..7abe589 100644
--- a/datahub/opal.py
+++ b/datahub/opal.py
@@ -116,7 +116,7 @@ def create_opal_frame() -> pd.DataFrame:
         An initial Dataframe for the opal data with key frame 0
     """
     df = pd.DataFrame(0, index=range(1), columns=list(opal_headers.keys()))
-    df["Time"] = pd.Timestamp(OPAL_START_DATE)
+    df["Time"] = pd.Timestamp(OPAL_START_DATE).as_unit("ns")
 
     return df