diff --git a/data_embed/index.html b/data_embed/index.html
index 43cdb82..cdbb125 100644
--- a/data_embed/index.html
+++ b/data_embed/index.html
@@ -1744,9 +1744,9 @@
                                             id="ntp.gmtCorrection"
                                             placeholder="0"
                                             class="form-control"
-                                            step="1"
-                                            min="-23"
-                                            max="23"
+                                            step="0.25"
+                                            min="-23.75"
+                                            max="23.75"
                                         />
                                         <span class="input-group-text"
                                             >hours</span